Question

A USA Today article claims that the proportion of people who believe global warming is a serious issue is 0.66, but given the number of people you've talked to about this same issue, you believe it is less than 0.66. The hypotheses for this test are Null Hypothesis: p ≥ 0.66, Alternative Hypothesis: p < 0.66. If you randomly sample 28 people and 22 of them believe that global warming is a serious issue, what is your test statistic and p-value?

1)	Test Statistic: -1.404, P-Value: 0.08

2)	Test Statistic: 1.404, P-Value: 0.92

3)	Test Statistic: 1.404, P-Value: 0.08

4)	Test Statistic: -1.404, P-Value: 0.92

5)	Test Statistic: 1.404, P-Value: 1.84

Answer 1

the correct option be:-

Test Statistic: 1.404, P-Value: 0.92 (2)

[explanation:-

hypothesis:-

necessary calculation :-

sample size (n) = 28

sample proportion () = 22/28 = 0.7857

here, we are doing 1 proportion Z test.

the test statistic be:-

p value be:-

[ in any blank cell of excel type =NORMSDIST(1.404) press enter] ]

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