Your analysis of the raw data indicates that 16 of the 30 students reported driving no more than 20 miles per day. Calculate a 98% confidence interval for the sample proportion. What Z Score was used?
Your analysis of the raw data indicates that 16 of the 30 students reported driving no more than 20 miles per day. Calculate a 98% confidence interval for the sample proportion. What Z Score was used?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
Your analysis of the raw data indicates that 16 of the 30 students reported driving no more than 20 miles per day.
Calculate a 98% confidence interval for the sample proportion.
What Z Score was used?
Transcribed Image Text:The Chancellor wants you to do a research study on the number of miles students report äriving
in a typical day. You select a random and representative sample of 30 students and ask them to
report the number of miles they drive in a typical day. The data below are in miles.
15
7
23
18
19
18
28
16
24
30
17
14
29
17
25
31
18
16
12
26
38
16
12
24
26
38
19
18
30
18
Expert Solution
Step 1
From the given information, let X be the number of students reported no more than 20 miles per day. X = 16.
Let n be the total number of students. n = 30.
Confidence level is 
Level of significance is 
The proportion of students reported no more than 20 miles per day is,
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