Question

At the local college, a study found that students earned an average of 9.1 credit hours per semester. A sample of 96 students was taken. What is the best point estimate for the average number of credit hours per semester for all students at the local college?

Answer 1

Answer: 9.1 credit hours per semester.

Explanation:

• The sample size
  `(\overline{x})` is the best point-estimate for the true population mean
  `(\mu)` ( if true population mean is unknown).

Given : At the local college, by taking a sample of 96 students , study found that students earned an average of 9.1 credit hours per semester.

i.e.
`\overline{x}=9.1` credit hours per semester.

Then, the best point estimate for the average number of credit hours per semester for all students at the local college should be sample mean

i.e.
`\mu=\overline{x}=9.1` credit hours per semester.