A student wanted to construct a 95% confidence interval for the average age of students in her statistics class. She randomly selected 9 students. Their average age was 19.1 years with a standard deviation of 1.5 years. What is the best point estimate for the population mean?
A) 2.1 years
B) 1.5 years
C) 19.1 years
D) 9 years

Question

Quizplus · Accepted Answer

The best point estimate for the population mean is the sample mean, which in this case is 19.1 years.

A Student Wanted to Construct a 95% Confidence Interval for the Average