84.5 inches 1 ft
---------------- * ---------------- = 7.0 ft (rounded to the nearest tenth)
1 12 inches
Answer:
The answer is A.
Step-by-step explanation:
The first graph was dilated by 1/2, therefore the answer is A
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)
Answer:
Step-by-step explanation:
sqrt[(z^3)(z^4)] = 
=
