Answers
Answer:
= 21
Step-by-step explanation:
Related Questions
7. A computer company that recently developed a new software product wanted to estimate the mean time taken to learn how to use this software by people who are somewhat familiar with computers. A random sample of 12 such persons was selected. The following data give the times taken (in hours) by these persons to learn how to use this software. 1.75 2.25 2.4 1.9 1.5 2.75 2.15 2.25 1.8 2.2 3.25 2.6 a. What is the point estimate of the population mean
Answers
Answer:
What company
Step-by-step explanation:
Find the area of this shape pleaseeeeee
Answers
Answer:
22 meters squared
Split the figure into a 2*9 rectangle and 2*4 triangle
HELP ASAP PLS ANSWER THE QUESTION IN THE PIC I GIV BRAINLEST AND LOTS OF POINTS TO CORRECT ANSWER
Answers
Answer:
What the question ?
Select the correct answer. The graph of the rational function f is shown. Which graph is the graph of g(x)=-f(x)?
Answers
Answer:
see picture
Step-by-step explanation:
Question on imagine
Will give 95 points if answer quickly
Answers
Answer:
B its 40cm^2
Step-by-step explanation:
break this odd shape up into two smaller ones like a 5x4 box and a 2x10 rectangle and add those two area together
Answer:
C).
Step-by-step explanation:
ABC is a straight line and angle CBD is 116
Answers
I think this is what your talking about
If you receive 25\% off an item costing $22.00, how much money do you save?
Answers
Answer:
5.50
Step-by-step explanation:
They save 5.50
Answer:
$5.50
Step-by-step explanation:
Hello! This is an easy one. If we are trying to find how much she is saving all we would need to do is multiply.
$22.00 * 25% = $5.50
If we are trying to find out the total with the discount all we would need to do is subtract.
22 - 5.5 = $16.50
Hope this helps!!
pls and this question
Answers
Answer:
-4
Step-by-step explanation:
that number cannot be simplified
A sociologist recently conducted a survey of citizens over 60 years of age who have net worths too high to qualify for Medicaid but have no private health insurance. The ages of the 25 uninsured senior citizens were as follows: Suppose the mean and standard deviation are 74.04 and 9.75, respectively. If we assume that the distribution of ages is mound-shaped and symmetric, what percentage of the respondents will be between 64.29 and 93.54 years old
Answers
Answer:
81.85% of the respondents will be between 64.29 and 93.54 years old
Step-by-step explanation:
Normal Probability Distribution:
Problems of normal distributions can be solved using the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
Mean and standard deviation are 74.04 and 9.75
This means that [tex]\mu = 74.04, \sigma = 9.75[/tex]
What percentage of the respondents will be between 64.29 and 93.54 years old?
The proportion is the pvalue of Z when X = 93.54 subtracted by the pvalue of Z when X = 64.29. So
X = 93.54
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{93.54 - 74.04}{9.75}[/tex]
[tex]Z = 2[/tex]
[tex]Z = 2[/tex] has a pvalue of 0.9772.
X = 64.29
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]Z = \frac{64.29 - 74.04}{9.75}[/tex]
[tex]Z = -1[/tex]
[tex]Z = -1[/tex] has a pvalue of 0.1587.
0.9772 - 0.1587 = 0.8185
0.8185*100 = 81.85%
81.85% of the respondents will be between 64.29 and 93.54 years old
The graph below shows Marlee's speeds through the duration of her run. Over which interval is Marlee's average rate of change equal to zero?
Answers
Answer:
1 to 5
Step-by-step explanation:
Avg rate of change = 0
m=0
In the interval between 1 to 5, the average rate of change is zero. No increase or decrease.
You are given data on number of radio ads and sales for a local department store. You had observations for 20 months. The correlation between ads and sales is 0.40. Does this indicate a positive and significant relationship between ads and sales at the 5% level of significance
Answers
Answer:
"No" would be the appropriate response. A further explanation is provided below.
Step-by-step explanation:
According to the question,
Number of observations,
n = 20
Significance level,
d = 5%
i.e.,
= 0.05
Calculated correlation,
= 0.40
Critical correlation value will be:
= 0.444
According to the question, we can see that the calculated correlation i.e., "0.40" is far less than the critical correlation value i.e., "0.444". The null hypothesis has always been not rejected. Thus it doesn't indicate the significant relationship.So the above it the right response.
find the area of the sector.
image and anwser choices is in the image please helpp i’ll give brainliest
Answers
80/360*pi*4square
What is the equation of an exponential function?
1)y=mx+b
2)a=b+c
3)y=a (b)^x
4)y=ax^2+bx+c
Answers
There are 12 boys and 15 girls in my classroom. What is the ratio of girls to total students in the classroom?
Answers
I acidently removed the stuff but anyways the answer is 12:27 or 12 to 27
do 12 + 15 = 27, and so 12 to 27 :)
Find the value of x for the quadrilateral with exterior angles of 6x+12, 15x-5, 10x+13, and 12x-4.
answers
90
360
3.81
8
Answers
To determine whether the pipe welds in a nuclear power plant meet specifications, a random sample of welds is selected, and tests are conducted on each weld in the sample. Weld strength is measured as the force required to break the weld. Suppose the specifications state that mean strength of welds should exceed 100 lb/in2; the inspection team decides to test
H0:μ=100 versus Ha:μ>100.
Explain why it might be preferable to use this Ha rather than μ<100.
A. We want to determine if there is significant evidence that the mean strength of welds differs from 100 lb/in2. The current hypotheses correctly place the burden of proof on those who wish to assert that the specification is not satisfied.
B. We want to determine if there is significant evidence that the mean strength of welds is less than 100 lb/in2. The current hypotheses correctly place the burden of proof on those who wish to assert that the specification is not satisfied.
C. We want to determine if there is significant evidence that the mean strength of welds exceeds 100 lb/in2. The current hypotheses correctly place the burden of proof on those who wish to assert that the specification is satisfied.
D. We want to determine if there is significant evidence that the mean strength of welds equals 100 lb/in2. The current hypotheses correctly place the burden of proof on those who wish to assert that the specification is satisfied.
Answers
Answer:
C. We want to determine if there is significant evidence that the mean strength of welds exceeds 100 lb/in2. The current hypotheses correctly place the burden of proof on those who wish to assert that the specification is satisfied.
Step-by-step explanation:
Given
[tex]\mu = 100[/tex]
[tex]H_0:\mu = 100\\\\H_a:\mu > 100[/tex]
Required
State why it is preferred to [tex]Ha: \mu < 100[/tex]
From the question, we understand that the initial test is the force required to break the weld.
This represents the null hypothesis
Because the required force can not be less than the strength of the weld (it must match the force keeping the weld), the null hypothesis is represented as:
[tex]H_0:\mu = 100[/tex]
Reading the question further;
The specification requires that the mean strength should exceed 100
In inequalities, exceeds means greater than, and it is represented with >
So, the null hypothesis is rightly represented as:
[tex]H_a:\mu > 100[/tex]
Hence: (c) is true
how many different ways can officers be appointed
Answers
why is water not used as a solvent in paper chromatography
Answers
Answer:
Because the kind of compounfds that you try to determine using paper chromatography (organic compounds) are usually not soluble in water. Furthermore, water could react chemically with some of this compounds, because it's a very reactive molecule. You need organic solvents that are mostly inert.
awnser please dont have much time
Answers
pretty sure it's this one couldn't see the bottom though
2. Find to the nearest foot the height of a vertical post if its shadow is 18 feet long when
the angle of elevation of the sun is 38º.
Answers
Which of the following applications of undefined terms made use of the concept of point as a location in space?
A RADAR. C laser beam
b tip of needle. D mole o a face
Answers
expression equivalent to (4x+3)+(-2x+4) is
Answers
Answer:
7x + 2x
Step-by-step explanation:
9x^2
Answer: 2x+7
Step-by-step explanation:
Since I am going to assume that you want me to simplify this expression, thats what I'm going to do.
1. Distribute the +1: 4x+3-2x+4
2. Combine like terms: 2x+7
Have a nice day! :D
PLEASE HELP. I NEED TO GET THIS RIGHT
Answers
Ciro is right
Gerard is wrong
Gunther is also wrong
Equal expression:
1 - 2(40x - 12)
Can someone help me please
Answers
9514 1404 393
Answer:
{Segments, Geometric mean}
{PS and QS, RS}
{PS and PQ, PR}
{PQ and QS, QR}
Step-by-step explanation:
The three geometric mean relationships are derived from the similarity of the triangles the similarity proportions can be written 3 ways, each giving rise to one of the geometric mean relations.
short leg : long leg = SP/RS = RS/SQ ⇒ RS² = SP·SQ
short leg : hypotenuse = RP/PQ = PS/RP ⇒ RP² = PS·PQ
long leg : hypotenuse = RQ/QP = QS/RQ ⇒ RQ² = QS·QP
I find it easier to remember when I think of it as the segment from R is equal to the geometric mean of the two segments the other end is connected to.
__
segments PS and QS, gm RS
segments PS and PQ, gm PR
segments PQ and QS, gm QR
10 POINTS PLS ANSWER
Answers
Answer:
Step-by-step explanation:
FGE is a straight line, and striaght lines measure 180 by definition. Therefore, x, angle BGA, and 55 all add together to equal 180. But notice that x and 55 are both marked with a single swish, meaning they are the same measure. So:
180 - 55 - 55 = x, so
x = 70
I need help with question 8
Answers
Answer:
the answer is B!
Step-by-step explanation:
because :
Jerry has = 150$
he "*DEPOSITED*" = 50$
(When the word deposit comes, it basically means we need to ADD)
therefore, 150 +50x = 500
(7 weeks) so,
150 + 50 * 7 = 500
see! my answer is correct !
mark me brainliest now pweasee! ;)) ♡♡♡
choose yes or no to tell whether each of the following describes a convenience sampling method
Answers
In short, we have these answers in this exact order: No, No, Yes, Yes.
Yi Min owns a small store. The first month the store was
open, she made $1,375 in profit. During the next month, she
advertised in the local newspaper and saw a 60% increase
in profit. How much profit did she make the second month?
Answers
Yi Min owns a small store. The first month the store was
open, she made $1,375 in profit. During the next month, she
advertised in the local newspaper and saw a 60% increase
in profit. How much profit did she make the second month?
'Percent (%)' means 'out of one hundred':
p% = p 'out of one hundred',
p% is read p 'percent',
p% = p/100 = p ÷ 100.
60% = 60/100 = 60 ÷ 100 = 0.6.
100% = 100/100 = 100 ÷ 100 = 1.
PLEASE HELP ME AND MY FRIEND WITH THIS PROBLEM!!
Answers
Answer:
36 possible outcomes
Step-by-step explanation:
OMG PLEASE HELP! THIS ASSIFNMENT DUE IN LIKE 5 MINUTES!! (Sorry if blurry pic)
Answers
Answer:
I think the 3rd answer
Step-by-step explanation: