Question

It takes four years for an undergraduate student to graduate with a bachelor's degree. A study reports that only 41% of full-time students graduate from universities in four years. The sample of 8 years has a mean of 37.2 and a standard deviation of 4.9. Is there sufficient evidence to support the report's claim?

Answer 1

Yes

Explanation:

One sample t test can be used to find if the claim is true or not.

Degrees of freedom= 8

t-statistic can be calculated from : (sample mean-population mean)/(standard deviation/√sample size)

Once the t-statistic is known, it can be compared with p-value obtained from t-table and conclusion made