Frito-Lay produces snack-sized bags of potato chips. Their bags of chips have a 12 ounce label on them representing the claimed average weight of the chips inside the bag. Frito-Lay insists that this is true and the average weight is normal with a standard deviation of .25 ounces. You decide to buy 75 bags of chips to weigh and they had an average of 10.2 ounces. Construct a 95% confidence interval. What are your conclusions for the claims by Frito-Lay?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Frito-Lay produces snack-sized bags of potato chips. Their bags of chips have a 12 ounce label on them representing the
claimed average weight of the chips inside the bag. Frito-Lay insists that this is true and the average weight is normal
with a standard deviation of .25 ounces. You decide to buy 75 bags of chips to weigh and they had an average of 10.2
ounces. Construct a 95% confidence interval. What are your conclusions for the claims by Frito-Lay?
Transcribed Image Text:Frito-Lay produces snack-sized bags of potato chips. Their bags of chips have a 12 ounce label on them representing the claimed average weight of the chips inside the bag. Frito-Lay insists that this is true and the average weight is normal with a standard deviation of .25 ounces. You decide to buy 75 bags of chips to weigh and they had an average of 10.2 ounces. Construct a 95% confidence interval. What are your conclusions for the claims by Frito-Lay?
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