A smartphone manufacturer is interested in constructing a 90% confidence interval for the proportion of smart phones that break before the warranty expires. 86 of the 1634 randomly selected smart phones broke before the warranty expired. with 90% confidence the proportion of all smart phones that break before the warranty expires is between and .
A smartphone manufacturer is interested in constructing a 90% confidence interval for the proportion of smart phones that break before the warranty expires. 86 of the 1634 randomly selected smart phones broke before the warranty expired. with 90% confidence the proportion of all smart phones that break before the warranty expires is between and .
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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A smartphone manufacturer is interested in constructing a 90% confidence interval for the proportion of smart phones that break before the warranty expires. 86 of the 1634 randomly selected smart phones broke before the warranty expired.
with 90% confidence the proportion of all smart phones that break before the warranty expires is between and .
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