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MATH 110 M8 Exam Requires Respondus LockDown Browser Webcam Introduction to Statistics, Portage Learning
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MATH 110 M8 Exam Requires Respondus LockDown Browser Webcam Introduction to Statistics, Portage Learning

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  • June 23, 2023
  • 10
  • 2022/2023
  • Exam (elaborations)
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M8: Exam- Requires Respondus LockDown Browser

 Due No due date



 Points 50



 Questions 5



 Time Limit 90 Minutes



 Requires Respondus LockDown Browser

This quiz is currently locked.

Attempt History

Attempt Time Score

LATEST Attempt 1 80 minutes 37 out of 50

Score for this quiz: 37 out of 50

Submitted Jul 25 at 1:39pm

This attempt took 80 minutes.



Question 1

pts

You may find the following files helpful throughout the exam:

Statistics_Equation_Sheet (Links to an external site.)

Standard Normal Table (Links to an external site.)

T-Table (Links to an external site.)



Suppose we have independent random samples of size n 1 = 420 and n2 = 510. The proportions of success
in the two samples are p1= .38 and p2 = .43. Find the 99% confidence interval for the difference in the
two population proportions.

, Answer the following questions:
1. Multiple choice: Which equation would you use to solve this problem?




A.




B.




C.




D.


2. List the values you would insert into that equation.

3. State the final answer to the problem

Your Answer:

1. The answer is B.

2. The values listed are: n1=420, n2=510, p1=.38, p2=.43, and 99% confidence relate to z=2.58, sample
size is greater than 30.

3. When using the formula above (B):



Therefore the interval will be : .-0.1333,-0.03326

From table 6.1, we see that 99% confidence corresponds to z=2.58. Notice that the sample sizes are
each greater than 30, so we may use eqn. 8.2:

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