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A poll of 2,096 randomly selected adults showed that 94% of them own cell phones. The technology display below results from a test of the

A poll of

2,096

randomly selected adults showed that

94%

of them own cell phones. The technology display below results from a test of the claim that

90%

of adults own cell phones. Use the normal distribution as an approximation to the binomial distribution, and assume a

0.05

significance level to complete parts (a) through (e).

Test of

p=0.9

vs

p0.9

Sample

X

N

Sample p

95% CI

Z-Value

P-Value

1

1961

2,096

0.935592

(0.925082,0.946101)

5.43

0.000

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