Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1114...

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Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1114...

Claim: Fewer than 97% of adults have a cell phone. In a reputable poll of 1114 adults, 88% said that they have a cell phone. Find the value of the test statistic.

math Statistics-And-Probability

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Answer 1

Answer #1

Solution:

Test statistics

z = ( - ) / *(1-) / n

= ( 0.88 - 0.97) / (0.97*0.03) / 1114

= -17.609

The test statistic is -17.609

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Answer 2

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