Answer:
95% Confidence interval = (23.4,26.2)
Step-by-step explanation:
In this problem we have to develop a 95% CI for the mean.
The sample size is n=49, the mean of the sample is M=24.8 and the standard deviation of the population is σ=5.
We know that for a 95% CI, the z-value is 1.96.
The CI is

Step-by-step explanation:
u should attach the picture of the question because its difficult to identify where x is located
kindly attach the picture
Answer:
3 2/3
Step-by-step explanation:
Use a calculator please