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An article published in the Washington Post claims that 45 percent of all Americans have brown...

An article published in the Washington Post claims that 45 percent of all Americans have brown eyes. A random sample of n = 82 college students students found 30 who had brown eyes.

Consider testing ?0:?=.45

??:?≠.45

(a) The test statistic is z =

(b) P-value =

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Answer #1

Given : n=82 , X=30

The estimate of the sample proportion is ,

The null and alternative hypothesis is ,

The test is two-tailed test.

(a) The test statistic is ,

(b) The p-value is ,

p-value=

; From standard normal distribution table

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