Question: The weekly time spent (in hours) on homework for 18 randomly selected high school students Use the data set to (a) Find the sample mean,

The weekly time spent (in hours) on homework for 18 randomly selected high school students

12.0 11.3 13.5 11.7 12.0 13.0 15.5 10.8 12.5 12.3 14.0 9.5

Use the data set to

(a) Find the sample mean,

(b) Find the sample standard deviation,

(c) Construct a 99% confidence interval for the population mean. Assume the population is normally distributed. If convenient, use technology.

12.0 11.3 13.5 11.7 12.0 13.0 15.5 10.8 12.5 12.3 14.0 9.5 88 10.0 12.8 15.0 11.8 13.0

Step by Step Solution

★★★★★

3.38 Rating (157 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock

a x 1219 b s 175 ... View full answer

blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Document Format (1 attachment)

Word file Icon

598-M-S-P (5000).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

Q:

The study described in Exercise 10.16 also evaluated the weekly time spent in employment. This sample comprises men and women with a high level of labor force attachment. Software shows the results....

Q:

In Exercise 28, the population mean weekly time spent on homework by students is 7.8 hours. Does the t-value fall between -t 0.99 and t 0.99 ? Data from Exercise 28: The weekly time spent (in hours)...

Q:

The amount of time Americans spend watching television is closely monitored by rms such as A. C. Nielsen because this helps to determine advertising pricing for commercials. (a) Do you think the...

Q:

The SAT scores of 12 randomly selected high school seniors Use the data set to (a) Find the sample mean, (b) Find the sample standard deviation, (c) Construct a 99% confidence interval for the...

Q:

Suppose you toss a coin 100 times and get 76 heads and 24 tails. Based on these results, what is the probability that the next flip results in a tail? Question list K O Question 3 The probability...

Q:

You don't have to supply a long explanation. Shown work works just as well! QUESTION 5 Construct a 95% confidence interval for the population mean, J. A study of 14 bowlers showed that their average...

Q:

QUESTION 1 Which method of collection of data should be used in a study where two groups are formed to determine the effectiveness of a new cold remedy in which one group takes the medicine and other...

Q:

Help me answer the following activities below and follow the given pages. Will rate you helpful, thank you. A. 0.66 B. 0.67 C. 0.68 D. 0.69 7. What is the equation of the line of best fit or...

Q:

1. OnJuly 7, 2010, The Gallup organization conducted a telephone poll of 1,007 random adults in all 50 U.S. states and the District of Columbia. They found that 38% strongly opposed the federal...

Q:

Instruction Workout the following problems and show all necessary steps to earn full credit. 1. In a random sample of 40 refrigerators, the mean repair cost was $150. Assumethe population standard...

Q:

At work my shift usually listens to radio while we work and it's been like that for six years now now all of a sudden two coworkers got into a argument but had nothing to do with the radio but the...

Q:

You are the manager of an organization in America that distributes blood to hospitals in all 50 states and the District of Columbia. Arecent report indicates that nearly 50 Americans contract HIV...

Q:

Count the number and value of the coins from Problem # 7 . The answer should be 1 0 and $ 0 . 7 0 . Automatically sum the value of the coins based on their size ( i . e . , the number of pixels per...

Q:

When questioned, Mark was able only to say that he had felt very down when he serviced the car, did not really know what he was doing at the time and had no recollection of it now. (a) Discuss Janes...

Q:

The numbers of touchdowns scored by 11 randomly selected NCAA Division I Subdivision teams in a recent season have a sample standard deviation of 9.35. Use an 80% level of confidence. Assume the...

Q:

As part of a water quality survey, you test the water hardness in several randomly selected streams. The results are shown in the figure at the left. Use a 95% level of confidence. Assume the sample...

Q:

As part of a survey, you ask a random sample of business owners how much they would be willing to pay for a website for their company. The results are shown in the figure at the left. Use a 90% level...

Q:

Statistics help The Acme Pro Office service provides temporary office personnel for many corporations. They have found that 88% of their invoices are paid within 10 working days by these...

Q:

What is AEI's times-interested-earned (TIE) ratio? TIE RATIO AEI Incorporated has $5 billion in assets, and its tax rate is 40%, Its basic earning power (BEP) ratio is 10%, and its return on assets...

Q:

What is the IRR of the following set of cash flows? Year Cash Flow 0 GN- 12,022 5.700 6,700 5,100 2 3 Multiple Choice 21.34% 22.22% 21.78% 22.87% 20.69%