Question: please help me answer the question A random sample of 82 college students were asked how many hours do they exercise in a typical week.

please help me answer the question

A random sample of 82 college students were asked how many hours do they exercise in a typical week. The data was entered in the Statistix software and the descriptive statistics printouts is shown below:

Descriptive Statistics

Exercise N           82 Lo 93% CI     6.0925 Mean        6.9878 Up 93% CI     7.8831 SD         4.4152 Minimum      0.0000 Median      6.5000 Maximum     22.000

Suppose it is desired to reduce the width of the confidence interval to get more accurate information. Which of the following will accomplish this goal?

a. Decrease the reliability level

b. Decrease the sample size

c. Decrease the alpha used

d. All of these would result in a narrower interval

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock 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

Students Have Also Explored These Related Mathematics Questions!

please help me answer the questions A random sample of 82 college students were asked how many hours do they exercise in a typical week. The data was entered in the Statistix software and the...

Student: allan cranford Date: 9/7/16 Instructor: Basu Dipanker Course: MAT-240-Q6622-16EW6 Assignment: 1-3 MyStatLab: Module One Problem Set 1. The following data represent the percent of owners of...

A random sample of 15 college students was asked "How many hours per week typically do you work outside the home?" Their responses are shown on the right. Determine the shape of the distribution of...

You mo not I: load this Ie to an online homework he! sites. Please see our course syllabus [or honor code rules. Thank you. Your solutions document should include the following items. Points will be...

I need help with a math document. Please show all working out as well. Not just the answers. Introduction to Statistics This PERFORMANCE ASSESSMENT TASK is designed to assess the learner's ability to...

In a certain town 60% of the households own mutual funds, 40% own individual stocks, and 20% own both mutual funds and individual stocks. 1. The proportion of households that own mutual funds but not...

Question 24 A random sample of 15 college students were asked "How many hours per week typically do you work outside the 13 34 4 home?" Their responses are shown on the right. 11 5 17 Determine the...

I need assistance calculating the correct mean in the last problem. see below. details will be great A random sample of 15 college students were asked "How many hours per week typically do you work...

The question is - the median number of hours worked by college students outside of the is ___ hours? HW Score. 51- Homework: Ch 3 HW: Question 7, 3.1.27 26 points Descriptive Statistics Part 4 of 5...

The following data are for Flat Bed Apparel: Sales volume (units): Product XX Product YY Sales price: Product XX Product YY Variable cost per unit: East 7,500 5,400 $24 $28 West $14 $17 8,100 11,400...

The stock price of Retro Co. is $65. Investors required a 12 percent rate of return on similar stocks. If the company plans to pay dividend of $3.80 next year, what growth rate is expected for the...

On January 1 , 2 0 2 3 , Cullumber Corporation issued $ 8 million of 1 0 - year, 7 % convertible debentures at 1 0 4 . Investment bankers believe that the debenture would have sold at 1 0 2 without...

Explain in detail a pre-retired member's entitlement with the Pension Protection Fund.

=+4 Identify four software tools that can help you revise messages and explain the risks of using them

=+5. Should you bother using transitions if the logical sequence of your message is already obvious? Why or why not? [LO-6]

=+Discuss the value of careful revision and describe the tasks involved in evaluating your first drafts and the work of other writers