ten igh intensity bulbs are tested for 100 hrs each. one failed at 50 hrs, another failed at 70 hrs and all others completed the test. calculate (FR%), FR(N) and MTBF

Answers

Answer 1

The failure rate (FR%) is 0.2%, the failure rate (FR(N)) is 0.2 failures per unit, and the mean time between failures (MTBF) is 164 hours.

How to calculate the (FR%), FR(N) and MTBF

To calculate the failure rate (FR%) and failure rate (FR(N)) for the 10 high-intensity bulbs, we can use the following formulas:

FR% = (number of failures / total time of observation) x 100%

FR(N) = number of failures / total number of units tested

Given that two bulbs failed during the 100-hour test, the FR% can be calculated as:

FR% = (2 / 1000) x 100% = 0.2%

The FR(N) can be calculated as:

FR(N) = 2 / 10 = 0.2 failures per unit

To calculate the mean time between failures (MTBF), we can use the following formula:

MTBF = total time of observation / number of failures

Given that two bulbs failed during the 100-hour test, the MTBF can be calculated as:

MTBF = (50 + 70 + (8 x 100)) / 2 = 164 hours

Therefore, the failure rate (FR%) is 0.2%, the failure rate (FR(N)) is 0.2 failures per unit, and the mean time between failures (MTBF) is 164 hours.

Learn more about failure rate at https://brainly.com/question/31523454

#SPJ1

Related Questions

2.4.2 Test (CST): Earth's Physical Systems
Question 10 of 25
During an El Niño event, higher-than-average rainfall in the southeastern
United States is caused by which of these?
A. Unusually cold waters in the eastern Pacific Ocean
B. Unusually cold waters in the western Atlantic Ocean
C. Unusually warm waters in the western Atlantic Ocean
D. Unusually warm waters in the eastern Pacific Ocean

Answers

D. Unusually warm waters in the eastern Pacific Ocean cause higher-than-average rainfall in the southeastern United States during an El Niño event.

What responsibilities do you think you might have if you think a law or action by government is unjust? Why?

Answers

Answer: A lawsuit and a plead to a court or even the Supreme Court.

Explanation: When it comes to government, the judicial branch is the ultimate check to other branches that may pass laws that are unconstitutional. For example, in Citizens United v. FEC the government ruled against itself when it initially barred Citizens United from airing a critical film of Hillary Clinton right before the 2008 primary elections. The SCOTUS found that this decision violated the 1st Amendment. This situation proves that the judicial branch is necessary in checking the government's power, giving a proper reason why a citizen should rely on the court to take care of them when they feel that they have been done wrong or unjustly by government entities.

All changes saved 1. Which of these research questions is much too broad? How do earthquakes form? What is the history of education? When did World War I end? What plants grow best in my region?

Answers

The research question that is too broad is: "What plans grow best in my region?"

How do you select a research qustion that is not too broad?

The above is too broad because, it involves researching a lot of plants and you don't want to do that.

To select a good research question, you want to ensure that the research qustion is a clear, concise and answerable one.

One effective technique for honing in on such a question involves starting with a general area of interest then narrowing down to one specific aspect or point of investigation. This entails methods like brainstorming sessions or consulting external sources to help focus the inquiry.

Larn more about research question:
https://brainly.com/question/30299267
#SPJ1

Which of these is a member of the Texas Executive Branch?
Responses
A RepresentativeRepresentative
B SenatorSenator
C Chief JusticeChief Justice
D Governor

Answers

The member of the Texas Executive Branch is the Governor. Therefore the correct answer is (D).

What is Executive Branch

In politics, the Executive Branch is one of the three branches of government in a democratic system, along with the Legislative Branch and the Judicial Branch.

The Executive Branch is responsible for enforcing and administering the laws of the country or state, depending on the level of government.

The head of the Executive Branch is the Chief Executive or Head of State, who is usually called the President (at the federal level) or Governor (at the state level). The President or Governor is elected by the people and serves as the highest-ranking officer of the Executive Branch.

Learn more about Executive Branch here:

https://brainly.com/question/29629806

#SPJ1

A region is bounded by the curves y = sinπ x , y = 4 x − 1 , and the x-axis. Determine the area of the region. Use the area formula for a triangle to expedite the calculation and show all your work.

Answers

First, we need to find the x-coordinates of the intersection points of the curves:

sinπx = 4x - 1
πx = arcsin(4x - 1)
x = arcsin(4x - 1)/π

The two curves intersect at two points, one of which is at x=0, the other one can be found numerically (e.g. using a graphing calculator) to be at approximately x=0.72.

Therefore, the area of the region can be found by dividing it into two triangles and one curved region:

Area = A1 + A2 + A3

where A1 is the area of the triangle bounded by the x-axis and the vertical lines x=0 and x=0.72, A2 is the area of the triangle bounded by the x-axis and the vertical lines x=0.72 and x=1, and A3 is the area of the curved region between the two vertical lines.

A1 = (1/2) * 0.72 * sin(π*0.72) ≈ 0.369
A2 = (1/2) * (1-0.72) * (4*0.72 - 1) = 0.4032
A3 = ∫[0.72,1] sin(πx) dx ≈ 0.4343

Therefore, the total area of the region is:

Area = A1 + A2 + A3 ≈ 1.2065

Answer: The area of the region bounded by the curves y=sinπx, y=4x-1, and the x-axis is approximately 1.2065 square units.

what predictions can you make about how long it would take water in a pond or lake to freeze compared to water in an ocean?

Answers

The time it takes for water to solidify depends on a assortment of components, such as temperature, saltiness, and the estimate of the body of water.

What is the predictions about?

In the text above, it would take longer for a huge body of water like an sea to solidify than a littler body of water like a lake or lake. This is often because the huge volume of water within the sea would take longer to cool down and reach the solidifying point, compared to a small body of water.

Moreover, the saltiness of sea water can influence the solidifying point, making it somewhat lower than freshwater. This implies that water in a lake or lake may solidify at a somewhat higher temperature than sea water.

Learn more about predictions from

https://brainly.com/question/25955478

#SPJ1

Can you help with this psychology question? What is 34 and 35?

Answers

You're correct with both, you shouldn't doubt yourself! Happy to help though, and have a great day! :)

(also freud is weird please tell me i'm not the only one who thinks this)

In a comprehensive paragraph, compare the characteristics of the scholarly and popular article you found in Practice Four. Include the
MLA 9th edition citation for each. Your post is worth 1 point and your response to another students is worth 1 point.
Your paragraph should fully explain your reasoning and support your statements with evidence. It must also discuss each of the
following questions:
How do the popular article and the scholarly article differ in type and quality of information? It might help to think about how
they differ in terms of ACORD to answer this question.
In which situations would you use each type of article, and why?
MLA example: Last Name, First Name. "Title of Article." Title of Periodical, Publication date, URL Access Date.

Answers

Matthew D.'s academic paper titled "Implications of Climate Change on Agriculture: An Overview and Review for the US Department of Defense" outlines the impact of climate change on farming. Rewording: Michael J. Durnin. Behm and Karen M. are the authors of the text.

What is the characteristics about?

The work of Watkins made an appearance in the 2017 issue of the Environmental Science & Policy journal. This article thoroughly examines the influence of climate change on agriculture, and discusses its potential implications for national security.

Stephanie Eckelkamp's widely read article titled "Climate Change: Impact on Agriculture" was posted on the Prevention website in 2018. The piece provides a concise summary of the consequences that arise due to climate change in regards to agriculture and the potential implications it may have on the production of food.

Learn more about article from

https://brainly.com/question/26441547

#SPJ1

from 8.05 APStat:
Offering career academies in high schools has become more popular during the past 30 years because they help students prepare for work and postsecondary education. A principal at a large high school with a Science, Technology, Engineering, and Mathematics (STEM) Academy is interested in determining whether the status of a student is associated with level of participation in advanced placement (AP) courses. Student status is categorized as (1) STEM for students in the STEM program or (2) regular. A simple random sample of 200 students in the high school was taken and each student was asked two questions:
Are you in the STEM Academy?
In how many AP courses are you currently enrolled?
The responses of the 200 students are summarized in the table.

Part A: Calculate the proportion of STEM students who participate in at least one AP course and the proportion of regular students in the sample who participate in at least one AP course.
Part B: Is participating in two or more AP courses independent of student status?
Part C: Describe a method that could have been used to select a simple random sample of 200 students from the high school.
Part D: Is there any reason to believe there is bias in the method that you selected? Why or why not?
Part E: The responses of the 200 students are summarized in the segment bar graph shown.

Compare the distributions and what the graphs reveal about the association between level of participation in AP courses and student status among the 200 students in the sample. (5 points)
Part F: Do these data support the conjecture that student status is related to level of participation in AP courses? Give appropriate statistical evidence to support your conclusion. (10 points)

Answers

STEM students who participate in at least one AP course account for 85% or 0.85 out of the total number of STEM students. As for regular students, the proportion of their participation is 70% or 0.70 based on our sample.

How to explain the sample

It should be noted that to select a sample from the high school, every student was assigned a unique identifier number which ranged between 1 and the total count of students in the establishment. A random number generator produced 200 numbers, and we selected the students with corresponding numbers as our sample.

The segment bar graph shows the distribution of students in each category of AP enrollment (0, 1, 2, or 3) for both STEM and regular students. The height of each segment represents the proportion of those who fall into that specific category.

Learn more about sample on

https://brainly.com/question/24466382

#SPJ1

Part A:
Let S be the event that a student is in the STEM Academy and let R be the event that a student is regular. The proportion of STEM students who participate in at least one AP course is (50 + 45)/120 = 0.79. The proportion of regular students who participate in at least one AP course is (35 + 20)/80 = 0.69.

Part B:
To determine whether participating in two or more AP courses is independent of student status, we need to compare the conditional probabilities of this event given each student status. If P(AP ≥ 2 | S) = 0.4 and P(AP ≥ 2 | R) = 0.25, then the events are not independent.

Part C:
A simple random sample of 200 students from the high school could have been selected by numbering each student in the high school and using a random number generator to select 200 numbers.

Part D:
There may be bias in the method of selecting a simple random sample if the numbers were not truly random or if some students were not included in the numbering system. However, if the numbers were truly random and all students were included in the numbering system, then the sample would be unbiased.

Part E:
The segment bar graph shows that a higher proportion of STEM students participate in at least one AP course compared to regular students. Additionally, a higher proportion of STEM students participate in two or more AP courses compared to regular students. These results suggest that there is a positive association between student status and level of participation in AP courses.

What are (at least) two ways EI can influence organizational culture?

Answers

Answer: A lack of EI/EQ can negatively impact communication in the workplace through several mechanisms: Less understanding of one's own emotions. Less understanding of the emotions of others. Less effective communication of ideas and emotions to others.

Explanation:

Other Questions

sandhill's t-shirts, inc., has debt claims of $290 (market value) and equity claims of $710 (market value). if the after-tax cost of debt financing is 10 percent and the cost of equity is 16 percent, what is sandhill's weighted average cost of capital? gerald wilkins owns a home worth $250,000, a car worth $15,000, various investments worth $600,000 and other personal assets worth $25,000, which is everything he owns. this is considered gerald's . a 12-year-old girl expresses concern to the nurse because she has not begun her period yet. the nurse notes that the girl has grown 6 in (15 cm) in the past year and a half and is beginning to develop breast buds. which response by the nurse is appropriate? The manager of a fast-food restaurant determines that the average time that her customers wait for service is 3 minutes. Find the probability that a customer has to wait more than 4 minutes. Dylan is putting a gold ribbon around the lid of a rectangular box. The lid ha a width of 6(1/4) inches and a length of 4(5/8) inches. The ribbon costs $1.50 per Inch. How much will it cost Dylan to p gold ribbon around the perimeter of the lid? $13.88 $21.75 $32.63 $43.36 The governor of texas is generally considered to be weaker than other governors. Which constitutional provisions restricts the power of the texas governor? Nose and Sinus: What must be considered in the performance of a complete examination of a child who has sustained a significant nasal injury? If you had $10,000 to invest, which 10 companies would you invest in right now and why?(Example) Disney: I would invest my money in Disney right now because I predict that Disneys revenue will increase sharply in the near future with the reopening of Disneyland and California Adventure and with the upcoming release of potential blockbuster Marvel movies and highly popular shows on Disney Plus. Help please science asap chandra owns a paddleboard company. if she invests in job-specific skills for her employees, she and . group of answer choices hires only those who already have the needed skills; pays them a high salary to foster loyalty hires separately for each labor task; focuses her hiring on specific skills needed trains workers as needed; thereby ensures that all have general skills provides training internally; does not impart skills that her workers could use to find jobs elsewhere which of the following accounting codes are considered champions for rules-based standards? (select two) a. international financial reporting standards (ifrs) b. american institute of certified public accountants (aicpa) c. chartered financial institute/analyst association (cfai/cfa) d. the academy of management (aom) code of ethics e. u.s. generally accepted accounting principles (us gaap) which of the following are among the major qualities or themes that experts believe appear in strong families? there are three main properties of color. the first, which refers to the name of the spectrum color is called: a. value b. monochromatic c. hue d. intensity Find the differential of each function. (a) y = x2 sin 8x dy = X (b) y = 4+ dy = a student is conducting an investigation to determine the effect of temperature on the metabolism of yeast (saccharomyces cerevisiae). yeast and sugar are added to water, the gas produced is captured, and its volume is recorded. which variables should be held constant during this investigation? (unit 1) mass of sugar and water temperature mass of yeast and mass of sugar volume of gas and water temperature volume of gas and mass of yeast What color wire do you always plug into the COM port?a. Blueb. Black c. Red What are the names of the five cities that make up the Philistine Pentapolis? As the president of your schools student council, it is your responsibility to plan the upcoming school dance. Write a letter to the principal explaining what you have planned for the dance. Explain what you need to do before, during and after the dance to ensure that the event runs smoothly. First, fill out the chart to plan the details that you will include in your letter. Now write your paragraph. Make sure that you include the following information:what you did for the preparations before the party using the expression acabar de + infinitivewhat you do at the party using as many irregular verbs as possiblea list of t commands that you give to your classmates to organize the different activities for the partyRequirements:Student must write at least 10 sentences.Student included at least 5 conjugated irregular verbs and highlighted the conjugated verb blue.Student included at least 4 affirmative T commands and highlighted green.Student included at least 3 acabar de + infinitive and highlighted yellow.Student included at least 10 vocabulary words and underlined them.PLEASE WRITE IN SPANISHHH Electron beams incident on a crystalline solid produces a diffraction pattern. Which of the following justifies why the wave model applies to the electron diffraction pattern?A.) Waves can interfere, forming diffraction patterns, but classical particles cannot. Moreover, the spacing between the fringes in the pattern is related to the distance between the atoms in the crystalline structure and the momentum of the electrons.B.) The spacing between the fringes in the pattern show that electrons can excite atoms, which release light when their electrons fall back to the ground state.C.) The wavelength of the pattern shows that electrons incident on a crystalline solid collide with photons and transfer energy and momentum from the electrons to the photons.D.) The wavelength of the pattern shows that electrons incident on the crystalline solid cause electrons to bounce back and forth between the atoms in the crystal, amplifying their energy. The higher-energy electrons emerge from the crystalline solid and produce an interference pattern. question 7 which of the following is not an instrument typically attached to the focal plane of a large, research-grade telescope? an eyepiece lens. a camera. a spectrograph.