A sample of midterm grades for five students showed the following results: 73, 66, 83, 91, 77. Which of the following statements are correct, and which should be challenged as being too generalized?

(a) The average midterm grade for the sample of five students is 78.

(b)The average midterm grade for all students who took the exam is 78.

(c)An estimate of the average midterm grade for all students who took the exam is 78.

(d) More than half of the students who take this exam will score between 71 and 86.

(e)If five other students are included in the sample, their grades will be between 66 and 91.

A.

Which of the above statements are correct? (Select all that apply.)

The average midterm grade for the sample of five students is 78.

The average midterm grade for all students who took the exam is 78.

An estimate of the average midterm grade for all students who took the exam is 78.

More than half of the students who take this exam will score between 71 and 86.

If five other students are included in the sample, their grades will be between 66 and 91.

B.

Which of the above statements should be challenged as being too generalized? (Select all that apply.)

The average midterm grade for the sample of five students is 78.

The average midterm grade for all students who took the exam is 78.

An estimate of the average midterm grade for all students who took the exam is 78.

More than half of the students who take this exam will score between 71 and 86.

If five other students are included in the sample, their grades will be between 66 and 91.