Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1006...

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Question

Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1006...

Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1006 adults, 88% said that they have a cell phone. Find the value of the test statistic.

The value of the test statistic is

math Statistics-And-Probability

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Answer 1

Answer #1

Solution:

Given that,

P0 = 0.98

= 0.88

1 - P0 = 0.02

Test statistic = z

= - P0 / [P0 * (1 - P0 ) / n]

= 0.88 - 0.98 / [(0.98 * 0.02) / 1006]

= - 22.66

Test statistic(z) = - 22.66

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Answer 2

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Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1122 adults

Claim: Fewer than 98% of adults have a cell phone. In a reputable poll of 1200...

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Claim: Fewer than 95% of adults have a cell phone. In a reputable poll of 1226...

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