Question

Suppose a random sample of 40 students from a university were asked their ages. The table below gives a summary of the reported ages. Report and interpret a 95% confidence interval for the population mean. Assume the necessary conditions hold.
Age # of students
18 8
19 10
20 9
21 7
22 6

Group of answer choices

(18.0, 22.0). We are 95% confident that the mean age of university students in this sample is between 18 and 22.

(A.19.4, 20.3). We are 95% confident that the mean age of university students in this sample is between 19.4 and 20.3.

(18.0, 22.0). We are 95% confident that the mean age of university students is between 18 and 22.

(19.4, 20.3). We are 95% confident that the mean age of university students is between 19.4 and 20.3.

Answer 1

Answer:

I think it is

Step-by-step explanation:

(18.0, 22.0). We are 95% confident that the mean age of university students is between 18 and 22.