Answer:

Step-by-step explanation:
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

Answer:
15.38461538461538
Step-by-step explanation:
In order to find who has read more pages, let's find the number of pages read by each one.
The number of pages read by Clancey is:

The number of pages read by Ethan is:

So Ethan read more pages.
The combined number of pages in both books is 240 + 170 = 410.
The combined number of pages read is 60 + 68 = 128
So the fraction is:
Answer:
30 miles an hour
Step-by-step explanation: