Answer:
X=117.9
Step-by-step explanation:
I got itttt
Answer:
We have to find the 90% confidence interval for the mean
Given sample size
Sample mean
Population standard deviation
Here the confidence level is 90% then
And
The 90% confidence interval is
Here is the critical value at 0.05
From the tables
Now the 90% confidence interval is =
=
=(3840.44, 4133.56)
Hence the 90% confidence interval for the mean is (3840.44, 4133.56)
It does not have a mode
Mode: is the number that appears the most
in this situation, no number appears more than once
hope this helps
