An Internet provider contacts a random sample of 300 customers and asks how many hours per week the customers use the Internet. time spent on the Internet per week was 7.2 hours, The responses are summarized in the provided dotplot. The average amount of with a standard deviation of 7.9 hours

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Question

1

An Internet provider contacts a random sample of 300 customers and asks how many hours per week the customers use the Internet.
The responses are summarized in the provided dotplot. The average amount of time spent on the Internet per week was 7.2 hours,
with a standard deviation of 7.9 hours.
0
O Yes
O No
6
12
1.1.
18 24 30
Hours of Internet Use per Week
36
42
Is it reasonable to use the t-distribution to construct a confidence interval for the average amount of time customers of this Internet
provider spend on the Internet each week?
Transcribed Image Text:An Internet provider contacts a random sample of 300 customers and asks how many hours per week the customers use the Internet. The responses are summarized in the provided dotplot. The average amount of time spent on the Internet per week was 7.2 hours, with a standard deviation of 7.9 hours. 0 O Yes O No 6 12 1.1. 18 24 30 Hours of Internet Use per Week 36 42 Is it reasonable to use the t-distribution to construct a confidence interval for the average amount of time customers of this Internet provider spend on the Internet each week?
A dotplot and the summary statistics for a sample are provided. Indicate whether or not it is appropriate to use the t-distribution.
n = 15; X=44; s = 7.32
Appropriate
O Not Appropriate
hotel
32
36
24
28
Transcribed Image Text:A dotplot and the summary statistics for a sample are provided. Indicate whether or not it is appropriate to use the t-distribution. n = 15; X=44; s = 7.32 Appropriate O Not Appropriate hotel 32 36 24 28
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