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12. A packaging company conducts a survey for the two new package designs for lunch boxes in a supermarket. The results are as follows: 158.5 138.4 168.1|| 149.4|| 145.8 168.7 154.4 162.9 Design1 Design2 150.3 155.4 151.6|| 158.8 151.4 150.8 161.4 157.6 156.8 147.6 a. What is the range of the true (or population) mean of the data in each design for 80% confidence level? b. Calculate the standard normal distribution z and P(z) for each data set.

12. A packaging company conducts a survey for the two new package designs for lunch boxes in a supermarket. The results are as follows: 158.5 138.4 168.1|| 149.4|| 145.8 168.7 154.4 162.9 Design1 Design2 150.3 155.4 151.6|| 158.8 151.4 150.8 161.4 157.6 156.8 147.6 a. What is the range of the true (or population) mean of the data in each design for 80% confidence level? b. Calculate the standard normal distribution z and P(z) for each data set.

MATLAB: An Introduction with Applications
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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12. A packaging company conducts a survey for the two new package designs for lunch boxes in a supermarket. The results are as follows: 158.5 138.4 168.1 149.4 145.8 168.7 154.4 162.9 Design1 Design2 | 150.3 | 155.4| 151.6|| 158.8 || 151.4 150.8 | 161.4 | 157.6 | 156.8 | 147.6 a. What is the range of the true (or population) mean of the data in each design for 80% confidence level? b. Calculate the standard normal distribution z and P(z) for each data set.
Transcribed Image Text:12. A packaging company conducts a survey for the two new package designs for lunch boxes in a supermarket. The results are as follows: 158.5 138.4 168.1 149.4 145.8 168.7 154.4 162.9 Design1 Design2 | 150.3 | 155.4| 151.6|| 158.8 || 151.4 150.8 | 161.4 | 157.6 | 156.8 | 147.6 a. What is the range of the true (or population) mean of the data in each design for 80% confidence level? b. Calculate the standard normal distribution z and P(z) for each data set.
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