You have just taken ownership of a pizza shop. The previous owner told you that you would save money if you bought the mozzarella cheese in a 4.5 pound slab. Each time you purchase a slab of cheese, you weigh it to ensure that you are receiving 72 ounces of cheese. The results of 7 random measurements are 70, 69, 73, 68, 71, 69 and 71 ounces. Are these differences due to chance or is the distributor giving you less cheese than you deserve?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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You have just taken ownership of a pizza shop. The previous owner told you that you
would save money if you bought the mozzarella cheese in a 4.5 pound slab. Each time
you purchase a slab of cheese, you weigh it to ensure that you are receiving 72 ounces
of cheese. The results of 7 random measurements are 70, 69, 73, 68, 71, 69 and 71
ounces. Are these differences due to chance or is the distributor giving you less cheese
than you deserve?
Transcribed Image Text:You have just taken ownership of a pizza shop. The previous owner told you that you would save money if you bought the mozzarella cheese in a 4.5 pound slab. Each time you purchase a slab of cheese, you weigh it to ensure that you are receiving 72 ounces of cheese. The results of 7 random measurements are 70, 69, 73, 68, 71, 69 and 71 ounces. Are these differences due to chance or is the distributor giving you less cheese than you deserve?
A rental car company claims the mean time to rent a car on their website is 60 seconds
with a standard deviation of 22 seconds. A random sample 36 customers attempted to
rent a car on the website. The mean time to rent was 55 seconds. Is this enough
evidence to say that the mean time is less than the company's claim? Consider a=0.05.
Transcribed Image Text:A rental car company claims the mean time to rent a car on their website is 60 seconds with a standard deviation of 22 seconds. A random sample 36 customers attempted to rent a car on the website. The mean time to rent was 55 seconds. Is this enough evidence to say that the mean time is less than the company's claim? Consider a=0.05.
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