Question

A professor gives a multiple choice exam where each question has four choices. The professor decides not to count a question against students if the class as a whole does worse on the question than they would have done simply by guessing. That is, if significantly less than 25% of the students answer a question correctly, then that question won't count against them.
Let p represent the proportion of students that would correctly answer the question.
Which of the following is an appropriate set of hypotheses for such a significance test?

ANSWER: H0​:p=0.25
Ha​:p<0.25​

Answer 1

Answer:

H0: p<0.25

Alternate hypothesis  H1: p>=0.25

Step-by-step explanation:

The null hypothesis of the question basically depends on the problem statement.

Here, the problem statement is that if  less than 25% of the students answer a question correctly, then that question won't count against them.

Hence, null hypothesis would be

H0: p<0.25

Alternate hypothesis  H1: p>=0.25

Answer 2

Answer:Z=1.5

Step-by-step explanation:

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