HomeworkLib
Question

A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year: 760 745 758 774 746744 706 720 761 758 762684 697 740680747730 733 703 745 695 705 701 764 -Clickhere for the Excel Data File Round your answers to 2 decimal places.) a. Find the mean, median, and mode of this information. Mean Median Mode 732.84 $745 and 758
b. What are the range and standard deviation? Range Standard deviation 28.53 c. Use the Empirical Rule to establish an interval which includes about 95 percent of the observations interval
math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

vens ann ple İ5t eltcending arrange d sample odes jnode_一 3AT-,.3.5& Ronde 4-686 angiven standard deviation is sample standard deviation. Then find 95% observations using Empirical rule.

When we have to find population standard deviation (Sigma)

Therefore use calculator then sigam = 27.95

Now

mu - 2*sigam = 732.84 - (2*27.95) = 676.94

mu + 2*sigma = 732.84 +(2*27.95) = 788.74

0 0
Add a comment
Answer #2

How did you come up the standard deviation?

0 0
Add a comment
Know the answer?
Add Answer to:
A sample of 25 undergraduates reported the following dollar amounts of entertainment expenses last year: 760...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • Question 2: How do the average credit scores of people living in various cities in the...

    Question 2: How do the average credit scores of people living in various cities in the US differ? The file Credit Score Data of 143 American cities is provided in Canvas. Construct a histogram Create a Five Summary Report Calculate Mean, Variance and Standard Deviation   What conclusion can you reach concerning the average credit scores of people living in different American cities? City State Average Credit Score Detroit Mi 743 New York NY 762 Minneapolis MN 787 Hartford CT 774...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT