Answer:
6
Step-by-step explanation:
No exact amount of cookies so if its a large batch we'll say there is 45 cookies 45 divided by 1/3 is 15
So 15 divided by 2 1/2 = 6
So your answer is 6.
You answered would be n is greater or equal to 4 but u have to us that symbol
Answer:
-0.3125
Step-by-step explanation:
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)