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 kernels 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: 8.4, 11.4, 8.7, 8.3, 4.6, 2.4, 3.2, 5.6. 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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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 kernels 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: 8.4, 11.4, 8.7, 8.3, 4.6, 2.4,
3.2, 5.6. 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.)
ST
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 kernels 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: 8.4, 11.4, 8.7, 8.3, 4.6, 2.4, 3.2, 5.6. 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.) ST
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