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

Option B) 19.1 years

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 9

Sample mean, = 19.1 years

Alpha, α = 0.05

Population standard deviation, σ =  1.5 years

We have to approximate best point estimate for population mean.

The best point estimate for population mean is the sample mean.

Thus, we can write

Thus, the correct answer is

Option B) 19.1 years

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