An employee of the College Board analyzes the mathematics section of the SAT for

Question

An employee of the College Board analyzes the mathematics section of the SAT for 99 students and finds = 31.3 and s = 12.8. She reports that a 99% confidence interval for the mean number of correct answers is (27.981, 34.619). Does the interval (27.981, 34.619) cover the true mean?

Which of the following alternatives is the best answer for the above question?

Question 10 options:

We will never know whether (27.981, 34.619) covers the true mean.

Yes, (27.981, 34.619) covers the true mean

No, (27.981, 34.619) does not cover the true mea

We will never know whether (27.981, 34.619) covers the true mean.

Yes, (27.981, 34.619) covers the true mean

No, (27.981, 34.619) does not cover the true mea

Explanation / Answer

Yes , (27.981,34.619) covers true mean.

Mean is 31.3 and s is 12.8 . It shows that mean is lies between 27.981 and 34.619.

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