A smart phone manufacturer is interested in constructing a 99% confidence interval for the proportion of smart phones that break before the warranty expires. 94 of the 1672 randomly selected smart phones broke before the warranty expired. Round answers to 4 decimal places where possible. a. With 99% confidence the proportion of all smart phones that break before the warranty expires is between |and b. If many groups of 1672 randomly selected smart phones are selected, then a different confidence interval would be produced for each group. About confidence intervals will contain the true population proportion of all smart phones that break before the warranty expires and about percent of these percent will not contain the true population proportion.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
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A smart phone manufacturer is interested in constructing a 99% confidence interval for the
proportion of smart phones that break before the warranty expires. 94 of the 1672 randomly
selected smart phones broke before the warranty expired. Round answers to 4 decimal places
where possible.
a. With 99% confidence the proportion of all smart phones that break before the warranty
expires is between
b. If many groups of 1672 randomly selected smart phones are selected, then a different
and
confidence interval would be produced for each group. About
percent of these
confidence intervals will contain the true population proportion of all smart phones that break
before the warranty expires and about
percent will not contain the true population
proportion.
Transcribed Image Text:A smart phone manufacturer is interested in constructing a 99% confidence interval for the proportion of smart phones that break before the warranty expires. 94 of the 1672 randomly selected smart phones broke before the warranty expired. Round answers to 4 decimal places where possible. a. With 99% confidence the proportion of all smart phones that break before the warranty expires is between b. If many groups of 1672 randomly selected smart phones are selected, then a different and confidence interval would be produced for each group. About percent of these confidence intervals will contain the true population proportion of all smart phones that break before the warranty expires and about percent will not contain the true population proportion.
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