Question

A simple random sample of eight high school students' ACT scores gave the following data: What is a point estimate for μ, the mean test score for the population? a. A point estimate cannot be computed since the data for the whole population are not available. b. 235 c. 29.38 d. 4.84

Answer 1

Answer: c, is the correct option.

Step-by-step explanation:

The sample mean is the best point estimate for the population mean in a particular study.

Given data of scores: $\begin{array}{llllllll}27 & 30 & 20 & 29 & 28 & 36 & 34 & 31\end{array}$

Sample mean = $\frac{\text{Sum of values}}{\text{Number of values}}$

$=\frac{27+30+20+29+28+36+34+31}{8}\approx29.38$

Hence, a point estimate for μ, the mean test score for the population is 29.38

Thus , c. is the correct option.