Hypothesis Testing: Multiple choice questions

1. Assume that you plan to use a significance level of α = 0.05 to test the claim that p1 = p2, Use the given sample sizes and numbers of successes to find the P-value for the hypothesis test.

n1 = 100 n2 = 140
x1 = 41 x2 = 35

Don't use plagiarized sources. Get Your Custom Essay on
Hypothesis Testing: Multiple choice questions
From $8/Page
Order Essay

a. 0.4211

b. 0.0021

c. 0.0512

d. 0.0086

2. Construct the indicated confidence interval for the difference between the two population means. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal.
A paint manufacturer wished to compare the drying times of two different types of paint. Independent simple random samples of 11 cans of type A and 9 cans of type B were selected and applied to similar surfaces. The drying times, in hours, were recorded. The summary statistics are as follows.
Type A Type B
X1 = 77.5hrs X2=63.6hrs
S1=4.5 hrs S2=5.1hrs
N1=11 N2=9
Construct a 98% confidence interval for μ1 – μ2 , the difference between the mean drying time for paint of type A and the mean drying time for paint of type B.

a. 8.28 hrs < &#956;1 – &#956;2 < 19.52 hrs

b. 8.35 hrs < &#956;1 – &#956;2 < 19.45 hrs

c. 8.58 hrs < &#956;1 – &#956;2 < 19.22 hrs

d. 8.42 hrs < &#956;1 – &#956;2 < 19.38 hrs

3. Construct a confidence interval for &#956;d, the mean of the differences d for the population of paired data. Assume that the population of paired differences is normally distributed.

A test of abstract reasoning is given to a random sample of students before and after they completed a formal logic course. The results are given below. Construct a 95% confidence interval for the mean difference between the before and after scores.
Before 74 83 75 88 84 63 93 84 91 77
After 73 77 70 77 74 67 95 83 84 75

a. 0.2 < &#956;d < 7.2

b. 0.8 < &#956;d < 6.6

c. 1.0 < &#956;d < 6.4

d. 1.2 < &#956;d < 5.7

4. The table shows the number satisfied in their work in a sample of working adults with a college education and in a sample of working adults without a college education. Assume that you plan to use a significance level of &#945; = 0.05 to test the claim that P1>P2. Find the critical value(s) for this hypothesis test. Do the data provide sufficient evidence that a greater proportion of those with a college education are satisfied in their work?
College Edu. No College Edu.
Number in sample 143 133
Number satisfied in their work 71 66
a. z = 1.645; no

b. z = -1.645; yes

c. z = 1.96; yes

d. z = ± 1.96; no
5. Find sd.

The differences between two sets of dependent data are 0.24, 0.34, 0.3, 0.38, 0.4. Round to the nearest hundredth.

a. 0.06

b. 0.09

c. 0.18

d. 0.03

_
6. The two data sets are dependent. Find d to the nearest tenth.

a. -2.1

b. -1.6

c. -1.0

d. -9.6

7. Construct the indicated confidence interval for the difference between the two population means. Assume that the two samples are independent simple random samples selected from normally distributed populations. Do not assume that the population standard deviations are equal.

A researcher was interested in comparing the salaries of female and male employees at a particular company. Independent simple random samples of 8 female employees and 15 male employees yielded the following weekly salaries (in dollars).

Female Male
495 722 518
760 562 904
556 880 1150
904 520 805
520 500 480
1005 1250 970
743 750 605
660 1640
Construct a 98% confidence interval for &#956;1 – &#956;2 the difference between the mean weekly salary of female employees and the mean weekly salary of male employees at the company.

_ _
(Note: x1 = $705.38, x2 = $817.07, s1 = $183.86, s2=$330.15

a. -$385 < &#956;1 – &#956;2 < $164

b. -$383 < &#956;1 – &#956;2 < $159

c. -$382 < &#956;1 – &#956;2 < $158

d. -$431 < &#956;1 – &#956;2 < $208

8. Find sd.

Consider the set of differences between two dependent sets: 84, 85, 83, 63, 61, 100, 98. Round to the nearest tenth.

a. 13.1

b. 15.3

c. 15.7

d. 16.2
9. Find the value of the linear correlation coefficient r.

x 57 53 59 61 53 56 60
Y 156 164 163 177 159 175 151

a. -0.054

b. 0.109

c. 0.214

d. -0.078

10. Is the data point, P, an outlier, an influential point, both, or neither?
^
The regression equation for a set of paired data is Y = -23.8 + 2x. The values of x run from 100 to 400. A new data point, P(194, 364.2) , is added to the set.

a. Both

b. Outlier

c. Neither

d. Influential point

11. Suppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear correlation between two variables. Find the critical values of r given the number of pairs of data n and the significance level &#945;.

n = 17, &#945; = 0.05

a. r = ±0.482

b. r = ±0.606

c. r = 0.482

d. r = 0.497

12. Suppose you will perform a test to determine whether there is sufficient evidence to support a claim of a linear correlation between two variables. Find the critical values of r given the number of pairs of data n and the significance level &#945;.

n = 40, &#945; = 0.01

a. r = ±0.312

b. r = 0.402

c. r = 0.43

d. r = ±0.402

13. Use the given data to find the best predicted value of the response variable.
Four pairs of data yield r = 0.942 and the regression equation y=3x. Also, y=12.75 What is the best predicted value of y for x=4.3?

a. 12.75

b. 12.9

c. 0.942

d. 2.826

14. Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correlation. Use a significance level of 0.05.

r = 0.523, n = 25

a. Critical values: r = ±0.487, no significant linear correlation

b. Critical values: r = ±0.396, significant linear correlation

c. Critical values: r = ±0.396, no significant linear correlation

d. Critical values: r = ±0.487, significant linear correlation

15. Find the critical value. Assume that the test is two-tailed and that n denotes the number of pairs of data.

n =80, &#945; = 0.05

a. -0.221

b. ±0.221

c. ±0.219

d. 0.221

Please help me out with these questions.
Word document might take a minute or so to load. Thanks Solution Summary
The solution provides answers to multiple choice questions on hypothesis testing.To continue with the answer check on topwriters4me.com/

Calculate the price
Make an order in advance and get the best price
Pages (550 words)
$0.00
*Price with a welcome 20% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Upload your instructions
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with Top Writers 4Me
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 10k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Other
I appreciate the help.
Customer 452567, March 18th, 2022
Healthcare Writing & Communications
Excellent!! You’re awesome, thank you very much for all of your hard work & help!!
Customer 452483, October 24th, 2021
Classic English Literature
Great paper, thank you!
Customer 452591, May 5th, 2022
Microbiology
Thank you so much! I appreciate what you do and all of the great help you've given me!
Customer 452483, September 6th, 2021
Mathematics
Thank you, great work!
Customer 452483, July 19th, 2021
Education
Great good
Customer 452555, February 14th, 2022
Healthcare Writing & Communications
Perfect! Thank you so much for all of your help!
Customer 452483, October 31st, 2021
Nursing
Good job!! Thank you!!!
Customer 452487, September 9th, 2021
Communications
Thank you so much!
Customer 452461, June 23rd, 2021
Sociology
Thank you so much! Appreciate it!
Customer 452483, November 8th, 2021
Introduction to Sociology
Amazing! Thank you so much for your hard work, appreciate it!!
Customer 452483, October 24th, 2021
English 101
Perfect! Thank you so much for all of your hard work and help! Appreciate it!!
Customer 452483, August 30th, 2021
1159
Customer reviews in total
96%
Current satisfaction rate
2 pages
Average paper length
47%
Customers referred by a friend
OUR GIFT TO YOU
20% OFF your first order
Use a coupon TOP20 and enjoy expert help with any task at the most affordable price.
Claim my 20% OFF Order in Chat
Open chat
Chat with us Live Here
Get in Touch with Our Live Chat Agents via WhatsApp on +1(346) 416-0954. Get Unlimited Access to Answers on Any Queries With Your Paper.