Use for questions 4-6 Conduct a test of the null hypothesis that the proportion
ID: 3311639 • Letter: U
Question
Use for questions 4-6 Conduct a test of the null hypothesis that the proportion of all students in the Census at School database who take a car to school is equal to 50% vs. the alternative that the proportion is less than 50%. Use a significance level of 0.05. Null hypothesis: Proportion = 0.5 Alternative hypothesis: Proportion0.5 n: 200 Successes: 8 p-hat: 0.4350 zstatistic: -1.838 P-value 0.03300 4.Is there statistically significant evidence for the alternative hypothesis?) 5. Suppose you somehow find out that the actual proportion for the entire database population is 50%. Looking back at your test from question 1, was the result of your test a correct decision, a Type 1 error, or a Type error. Explain. 6. Suppose you somehow find out that the actual proportion for the entire database population is 48 %. Looking back at your test from question 1, was the result of your test a correct decision, a Type 1 error, or a Type error. Explain.Explanation / Answer
4)
Yes becuase p-value is less than 0.05 level of signifcance.
5)
That is null hypothesies is actually true.
Since null hypothesis is true and we reject it so type ! has been made.
6)
That is null hypothesies is actually false.
Since null hypothesis is false and we reject it so it is a correct decision.
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