Solved: Travel Time The following data represent the

Chapter 3, Problem 20E

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Problem 20E

Travel Time The following data represent the travel time (in minutes) to school for nine students enrolled in Sullivan’s College Algebra course. Treat the nine students as a population.

Student

Travel Time

Student

Travel Time

Amanda

39

Scot

45

Amber

21

Erica

11

Tim

9

Tiffany

12

Mike

32

Glenn

39

Nicole

30

 

(a) Determine the population standard deviation.

(b) Find three simple random samples of size 4, and determine the sample standard deviation of each sample.

(c) Which samples underestimate the population standard deviation? Which overestimate the population standard deviation?

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