ONLY ANSWER CORRECTLY
Select the correct answer.
Nathan had an infection, and his doctor wanted him to take penicillin. Because Nathan's father and paternal grandfather were allergic to
penicillin, Nathan has a 75% chance of having the same allergy. The doctor performed a skin test to see whether Nathan would react to it. The
test is 98% accurate. What is the probability that Nathan is not allergic to penicillin and the test predicts it?
OA. 0.005
ОВ,
0.015
Ос.
0.245
OD 0.735
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Answer:
C 0.245
Step-by-step explanation:
have a good day/night sorry if wrong may i please have a bralliest
25. A new app was downloaded 175 times in its first week Since then the number of downloads
increased by 16.5% each week. Use a continuous exponential growth model to approximate
the number of times the app was downloaded in 2 week
37
0/1
37
Answer:
238 times
Step-by-step explanation:
Given
[tex]a = 175[/tex] -- first week
[tex]r = 16.5\%[/tex]--- growth per week
[tex]t = 2[/tex] --- time
Required
The number of times it was downloaded in 2 weeks
An exponential growth is represented as:
[tex]y = a(1 + r)^t[/tex]
So, we have:
[tex]y = 175 * (1 + 16.5\%)^2[/tex]
[tex]y = 175 * (1.165)^2[/tex]
[tex]y = 175 * 1.357225[/tex]
[tex]y = 237.514375[/tex]
[tex]y = 238[/tex] -- approximated
In a popular online role playing game, players can create detailed designs for their
character's "costumes," or appearance. Samuel sets up a website where players can
buy and sell these costumes online. Information about the number of people who
visited the website and the number of costumes purchased in a single day is listed
below.
81 visitors purchased no costume.
17 visitors purchased exactly one costume.
2 visitors purchased more than one costume.
Based on these results, express the probability that the next person will purchase no
more than one costume as a fraction in simplest form.
Answer: 49/50
Step-by-step explanation:
81 + 17 + 2 = 10
98/100 = 49/50
The probability as a fraction in simplest form is 49/50.
Can a person train to become better at holding their breath? An experiment was designed to find out. A group of 12 volunteers were randomly assigned to 1 of 2 groups. The 6 volunteers assigned to group 1 were given breath-holding exercises to perform for 2 weeks. The other group was not given any information about the experiment. At the end of the 2 weeks, all 12 volunteers were individually tested to determine how long they could hold their breath. Here are the data (in seconds):
Group 1: 90, 88, 70, 110, 75, 105
Group 2: 40, 48, 35, 50, 55, 62
The researcher would like to determine if these data provide convincing evidence that the true mean amount of time volunteers who were given training held their breath is greater than the true mean amount of time volunteers without training held their breath. The researcher tests H0: μ1 – μ2 = 0, Ha: μ1 – μ2 > 0, where μ1 = the true mean amount of time that volunteers who were given training held their breath and μ2 = the true mean amount of time that volunteers without training held their breath. The conditions for inference are met. The standardized test statistic is t = 5.44. What is the P-value of this test closest to?
Answer is A, 0
The null hypothesis may be significantly rejected. Choose A, 0, for the closest response.
What does "true mean" refer to?In statistics, the term "true mean" refers to the true mean of a population or set of data.
It is typically unknown; hence it is estimated using inferential statistics using a sample.
For group 1, s1²= 250.67
group 2, s2² = 96.27
t= 5.44 which is the difference of mean.
Given the data values:
Group 1: 90 88 70 110 75 105
Group 2: 40 48 35 50 55 62
For group 1, n1 = 6
group 2, n2 = 6
Given that H_o= u1 - u2 = 0
H_a = u1 - u2 > 0
To find the t-test about the difference, we would use the formula to solve.
The totals are displayed below:
x1 = 538
x2 = 290
(x1-x2) ² = 1253.3334
x2-x2= 0
(X2-x2) ² =481.3334
For group 1, s1²= 250.67
group 2, s2² = 96.27
t= 5.44 which is the difference of mean.
To know more about statistics, visit:
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The perimeter of a semicircle is 15.42 inches. What is the semicircle's diameter?
Answer:
5.998
Simplified: 6
Step-by-step explanation:
Which shows the best path to find the number of centimeters in 1 yard?
yards -> inches -> centimeters
yards -> feet -> centimeters
centimeters -> feet -> inches
centimeters -> feet -> yards
Answer:
yards feet centimeters
ASAPPP PLSSSS HELPPP!!!!!
A)67
B)23
C)117
D)157
E)None of these
Please hel p me. !!!!!!!
Answer:
7,3921
Step-by-step explanation:
Find the x-intercept and y-intercept of the line −2x − 2y = −2. Use the intercepts to graph the equation.
Answer:
Step-by-step explanation:
The x-intercept is 1, the y-intercept is 1. Convert it to slope-intercept form, then plug in 0 for y to find the x-intercept.
Find the volume of a hexagonal pyramid with a base area of 50 ft ^2 and height of 6 ft
Answer:
V=100ft³
Step-by-step explanation:
WHAT IS THE AREA OF A RECTANGULAR GARDEN MEASURING 14 METRES BY 8.5 METRES
Right Triangles
Solve the right triangle shown in the figure
∠C = 90°, BC = 7.50mi, AC = 11.43mi
a. AB = 19.5mi, ∠A = 31.2°, ∠B = 58.8°
b. AB = 16.mi, ∠A = 35.2°, ∠B = 54.8°
c. AB = 13.7mi, ∠A = 33.3°, ∠B = 56.7°
d. No triangle satisfies the given conditions.
Please select the best answer from the choices provided
Answer:
C. AB = 13.7mi, ∠A = 33.3°, ∠B = 56.7°
Step-by-step explanation:
I calculated it logically
Which equation represents the following table?
Answer:
y = 2x+4
Step-by-step explanation:
When we substitute the value of x in y =2x+4. The output of function is exactly like in the table shown.
x = 1 —> y = 2(1)+4 = 6
x = 3 —> y = 2(3)+4 = 10
x = 5 —> y = 2(5)+4 = 14
x = 7 —> y = 2(7)+4 = 18
x = 9 —> y = 2(9)+4 = 22
Since the output is exactly like in the table. Therefore, y = 2x+4 represents the following table.
4×103 times what number is equal to 16×105?
Answer:4.077669903
Step-by-step explanation:
4×103 is 4.04 times the 16*105.
What is Algebra?Algebra is a branch of mathematics that deals with symbols or variables and uses arithmetic operations (+, –, ×, ÷) to find the unknown quantities represented by these variables.
Let us consider the number be 'x'.
So, 4*103 of x = 16*105
x= 16*105/4*103
x= 4*1.01
x= 4.04
Hence, the number is 4.04.
Learn more about concept here:
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2x27 ÷2+95x4
Help me
Answer:
407
Step-by-step explanation:
Using PEMDAS, we get that (2x27) ÷ 2 + (95x4)
54÷2+380
27+380
407
Two angles in a triangle have measures of 62° and 15º.What is the measure of the third angle?
Answer:
103 degrees
Step-by-step explanation:
The angles in a triangle always add up to 180 degrees
so 62+15=77
180-77=103
hope it helps :)
Answer:
103º
Step-by-step explanation:
All angles of a triangle add up to 180º
This means:
62º + 15º + the third angle = 180º
Then you just solve:
180º - 77º = 103º
Hope this helps :)
What is the result when you combine only the constants in the following expression?
3 a minus 6 b + 3 minus 7 a + 10
Answer:
6b-4a+13
Step-by-step explanation:
3a-6b+3-7a+10
3+10=13
3a-7a=-4a
6b-4a+13
Answer:
13
Step-by-step explanation:
John buys 6 shares for $3 each. He sells them for $4. What is his capital gain?
He bought them for $3 each and sold them for $4 each. That is a gain of $1 for each stock (4-3 = 1)
6 stocks x $1 = $6 total gain
6+3+4=13
Step-by-step explanation:
and if u multiple are divided u will get 6×3×4= 72 and if u divided 6÷3÷4=0.5and if u multiple and divide u will get 4.5
in screenshot ı didn t understand this question
Answer:
cool neither do i
Step-by-step explanation:
Evaluate the expression for n = 4.
3(n + 1) =
Answer: Your answer is 15!
Step-by-step explanation: First, you have to do 4 + 1, equaling 5. Next, 5 x 3, which is 15.
PLEASE HELP ME PLEASE what is the answer besides 3
Pls help!!
Jody has 15 pound bag of potatoes. She uses 3/4 of the bag to make potato salad. How many pounds of potatoes does Jody use for the potato salad?
Answer:
11.25
Step-by-step explanation:
15x3/4=45/4=11.25pounds
The price of an 18-minute phone call is 1.60$. What is the price of an 18-minute phone call?
Simplify this expression:
5xy-x^t+2xy+3x^t
P9-17 Comparing Investment Criteria [LO1, 2, 3, 5, 7] Consider the following two mutually exclusive projects: Year Cash Flow (A) Cash Flow (B) 0 –$221,117 –$16,136 1 27,200 5,520 2 60,000 8,304 3 60,000 13,962 4 425,000 9,960 Whichever project you choose, if any, you require a 6 percent return on your investment. a. What is the payback period for Project A?
Answer:
3.17 YEARS
Step-by-step explanation:
Payback calculates the amount of time it takes to recover the amount invested in a project from it cumulative cash flows
Payback period = Amount invested / cash flow
Payback period for option A, Product A
Amount invested = –$221,117
Amount recovered in year 1 = –$221,117 + 27,200 = -193,917
Amount recovered in year 2 = -193,917 + 60,000 = -133,917
Amount recovered in year 3 = -133,917 + 60,000 = -73,917
Amount recovered in year 4 = -73,917 + 425,000 = 351,083
Payback period = 3 years + (73,917 / 425,000) = 3.17 years
Please help me with my math guys really need it
Answer:
The answers are given in the pictures. One of them was an opinionated question, so you can just put whatever you want there. I put my opinion just in case.
Step-by-step explanation:
to help consumers assess the risks they are taking, the food and drug administration (FDA) publishes the amount of nicotine found in all commerical brands of ciagrettes. a new ciagrette has recently been marketed. the FDA tests on this ciagrette yielded mean nicotine content of 24.3 milligrams and standard deviation of 2.1 milligrams for a sample of 9 ciagrettes. construct a 99% confidence interval for the mean nicotine content of this brand of ciagrette.
Answer:
The 99% confidence interval for the mean nicotine content of this brand of cigarette is between 21.95 and 26.65 milligrams.
Step-by-step explanation:
We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.
The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So
df = 9 - 1 = 8
99% confidence interval
Now, we have to find a value of T, which is found looking at the t table, with 8 degrees of freedom(y-axis) and a confidence level of [tex]1 - \frac{1 - 0.99}{2} = 0.995[/tex]. So we have T = 3.3554
The margin of error is:
[tex]M = T\frac{s}{\sqrt{n}} = 3.3554\frac{2.1}{\sqrt{9}} = 2.35[/tex]
In which s is the standard deviation of the sample and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 24.3 - 2.35 = 21.95 milligrams
The upper end of the interval is the sample mean added to M. So it is 24.3 + 2.35 = 26.65 milligrams
The 99% confidence interval for the mean nicotine content of this brand of cigarette is between 21.95 and 26.65 milligrams.
Plz help me well mark brainliest if you are correct!.....
Answer:
The first one is the answer to the question
Triangle has vertices A(-1, 3), B(-2, 1), and C(0, 4). If the triangle is reflected over the y-axis, what are the coordinates of A'?
Answer: A’ (1, 3)
Step-by-step explanation:
Reflecting in the y-axis will only reverse the x values
4/5+ 2/3 =? pls help i'm.in 5th grade
Answer:
2/15
Step-by-step explanation: