Statistics | Geometry homework help

 first six questions.

1.      Construct the indicated confidence interval for the difference between population proportion. Assume that the samples are independent and that they have been randomly selected. In a random sample of 300 women, 45% favored stricter gun control legislation. In a random sample of 200 men, 25% favored stricter gun control legislation. The claim is that women are more likely to support stricter gun control legislation. Construct a 98% confidence interval for the difference between the population proportions.

[removed]

A.

0.114 < P1 – P2 < 0.286

[removed]

B.

0.85 < P1 – P2 < 0.315

[removed]

C.

0.092 < P1 – P2 < 0.308

[removed]

D.

0.118 < P1 – P2 < 0.282

2 points   

QUESTION 2

1.      Find the number of successes x suggested by the given statement.  A computer manufacturer randomly selects 2680 of its computers for quality assurance and finds that 1.98% of these computers are found to be defective.

[removed]

A.

51

[removed]

B.

53
 

[removed]

C.

58

[removed]

D.

56

1 points   

QUESTION 3

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.
n
1 = 50                  n2 = 50                  x1 = 8                     x2 = 7

[removed]

A.

0.2206
 

[removed]

B.

0.9974

[removed]

C.

0.3897

[removed]

D.

0.6103

2 points   

QUESTION 4

1.      Assume that you plan to use a significance level of α = 0.05 to test the claim thathttps://content.learntoday.info/Learn/QuestionData/ab894216-89c1-40a8-850f-7a71db625489/223I324232I21T526653.gif, Use the given sample sizes and numbers of successes to find the pooled estimate p. Round your answer to the nearest thousandth.
n
1 = 100                n2 = 100                x1 = 42                   x2 = 45

[removed]

A.

0.479

[removed]

B.

0.435

[removed]

C.

0.392
 

[removed]

D.

0.305

1 points   

QUESTION 5

1.      A paint manufacturer made a modification to a paint to speed up its drying time. Independent simple random samples of 11 cans of type A (the original paint) and 9 cans of type B (the modified paint) 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 = 76.3 hrs                        x2= 65.1 hrs
s
1 = 4.5 hrs                          s2= 5.1 hrs
n
1 = 11                               n2= 9

The following 98% confidence interval was obtained for μ1 – μ2, the difference between the mean drying time for paint cans of type A and the mean drying time for paint cans of type B: 
4.90 hrs < μ
1 – μ2 < 17.50 hrs

What does the confidence interval suggest about the population means?

[removed]

A.

The confidence interval includes only positive values which suggests that the mean drying time for paint type A is smaller than the mean drying time for paint type B. The modification does not seem to be effective in reducing drying times.

[removed]

B.

The confidence interval includes only positive values which suggests that the two population means might be equal. There doesn’t appear to be a significant difference between the mean drying time for paint type A and the mean drying time for paint type B. The modification does not seem to be effective in reducing drying times.

[removed]

C.

The confidence interval includes only positive values which suggests that the mean drying time for paint type A is greater than the mean drying time for paint type B. The modification seems to be effective in reducing drying times.

[removed]

D.

The confidence interval includes 0 which suggests that the two population means might be equal. There doesn’t appear to be a significant difference between the mean drying time for paint type A and the mean drying time for paint type B. The modification does not seem to be effective in reducing drying times.

2 points   

QUESTION 6

1.      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.

Arrival delay times in minutes of two flights between Los Angeles and New York are given below. Use alpha = 0.05.

http://content.learntoday.info/G310_Winter_15/site/Media/images/mod07quiz_q4.png

[removed]

A.

-23.3 < µ1 – µ2 < 12.46

[removed]

B.

-18.1 < µ1 – µ2 < 7.25

[removed]

C.

-21.1 < µ1 – µ2 < 10.2

[removed]

D.

-15.75 < µ1 – µ2 < 4.92

Calculate the price of your order

550 words
We'll send you the first draft for approval by September 11, 2018 at 10:52 AM
Total price:
$26
The price is based on these factors:
Academic level
Number of pages
Urgency
Basic features
  • Free title page and bibliography
  • Unlimited revisions
  • Plagiarism-free guarantee
  • Money-back guarantee
  • 24/7 support
On-demand options
  • Writer’s samples
  • Part-by-part delivery
  • Overnight delivery
  • Copies of used sources
  • Expert Proofreading
Paper format
  • 275 words per page
  • 12 pt Arial/Times New Roman
  • Double line spacing
  • Any citation style (APA, MLA, Chicago/Turabian, Harvard)

Our guarantees

Delivering a high-quality product at a reasonable price is not enough anymore.
That’s why we have developed 5 beneficial guarantees that will make your experience with our service enjoyable, easy, and safe.

Money-back guarantee

You have to be 100% sure of the quality of your product to give a money-back guarantee. This describes us perfectly. Make sure that this guarantee is totally transparent.

Read more

Zero-plagiarism guarantee

Each paper is composed from scratch, according to your instructions. It is then checked by our plagiarism-detection software. There is no gap where plagiarism could squeeze in.

Read more

Free-revision policy

Thanks to our free revisions, there is no way for you to be unsatisfied. We will work on your paper until you are completely happy with the result.

Read more

Privacy policy

Your email is safe, as we store it according to international data protection rules. Your bank details are secure, as we use only reliable payment systems.

Read more

Fair-cooperation guarantee

By sending us your money, you buy the service we provide. Check out our terms and conditions if you prefer business talks to be laid out in official language.

Read more
Open chat
Hello, welcome to our site. Kindly send us a message and we will be in contact with you right away. "We are simply the best"