Yvon Hopps ran an experiment to determine the optimum power and time settings for microwave popcorn. His goal was to find a combination of power and time that would deliver high-quality popcorn with less than 9% of the kemels left un-popped, on average. After experimenting with several bags, he determined that power 9 at 4 minutes was the best combination. To be sure that the method was successful, he popped 8 more bags of popcorn (selected at random) at this setting. All were of high quality, with the following percentages of uncooked popcorn: 6.3, 11, 8.5, 5.7, 4.7, 4, 4.3, 4.2. Does the 95% confidence interval suggest that he met his goal of an average of no more than 9% uncooked kernels? Explain. The 95% confidence interval for the true mean percentage of unpopped kernels is (%. %). (Round to two decimal places as needed. Use ascending order.)
Yvon Hopps ran an experiment to determine the optimum power and time settings for microwave popcorn. His goal was to find a combination of power and time that would deliver high-quality popcorn with less than 9% of the kemels left un-popped, on average. After experimenting with several bags, he determined that power 9 at 4 minutes was the best combination. To be sure that the method was successful, he popped 8 more bags of popcorn (selected at random) at this setting. All were of high quality, with the following percentages of uncooked popcorn: 6.3, 11, 8.5, 5.7, 4.7, 4, 4.3, 4.2. Does the 95% confidence interval suggest that he met his goal of an average of no more than 9% uncooked kernels? Explain. The 95% confidence interval for the true mean percentage of unpopped kernels is (%. %). (Round to two decimal places as needed. Use ascending order.)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 9PPS
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Transcribed Image Text:Yvon Hopps ran an experiment to determine the optimum power and time settings for microwave popcorn. His goal was to find a combination of power and time that
would deliver high-quality popcorn with less than 9% of the kemels left un-popped, on average. After experimenting with several bags, he determined that power 9 at
4 minutes was the best combination. To be sure that the method was successful, he popped 8 more bags of popcorn (selected at random) at this setting. All were of
high quality, with the following percentages of uncooked popcorn: 6.3, 11, 8.5, 5.7, 4.7, 4, 4.3, 4.2. Does the 95% confidence interval suggest that he met his goal
of an average of no more than 9% uncooked kernels? Explain.
The 95% confidence interval for the true mean percentage of unpopped kernels is (%, %).
(Round to two decimal places as needed. Use ascending order.)
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