The president of a certain college believes that the proportion of students who

Question

The president of a certain college believes that the proportion of students who enroll in her institution have a Higher, completion rate

Which of the following is a Type I error?

(A) The president fails to reject the hypothesis that the proportion of students who earn a bachelor's degree within six years is 0.398, when, in fact, the proportion is Greater than 0.398.

(B) The president rejects the hypothesis that the proportion of students who earn a bachelor's degree within six years is 0.398, when, in fact, the proportion is 0.398

(C) The president fails to reject the hypothesis that the proportion of students who earn a bachelor's degree within six years 0.398,when, in fact the proportion is 0.398

(D) The president rejects the hypothesis that the proportion of students who earn a bachelor's degree within six years is 0.398, when in fact, the proportion is greater than 0.398  

Which of the following is a Type I error?

(A) The broker fails to reject the hypothesis that the mean price is $243,769 when it is the true mean cost.

(B) The broker rejects the hypothesis that the mean price is $243,769 when it is the true mean cost.  

(C) The broker rejects the hypothesis that the mean price is $243,769 when the true mean price is Greater than $243,769

(D) The broker fails to reject the hypothesis that the mean price is $243,769, when the true mean price is Greater than $243,769  

Explanation / Answer

as ype I error is to reject null hypothesis when it is true,Therefore

1) option C is correct

(C) The president fails to reject the hypothesis that the proportion of students who earn a bachelor's degree within six years 0.398,when, in fact the proportion is 0.398

2) option B is correct

(B) The broker rejects the hypothesis that the mean price is $243,769 when it is the true mean cost.  

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