Question

Suppose that a travel bureau claims that the trees in a forest are 83 feet tall on average, with a standard deviation of 2 feet. If you took a sample of 64 trees, which of the following mean heights would be outside the 95% confidence interval?

A. 83.2 feet
B. 83.4 feet
C. 82.8 feet
D. 83.6 feet

Answer 1

Do you know how to solve for your error margin?

Answer 2

this is the same problem as your "customer service" problem, but with different numbers

Answer 3

So given:
That the the sample mean is 83
The error margin is 1.96^2 / Squa*64
-> Which gives = 0.49 Approximately

Now the range is from
83 - 0.49 < u < 83 + 0.49

Answer 4

I got 82.51, 83.49

Answer 5

those aren't in the multiple choice

Answer 6

yes I know one second

Answer 7

I think it would be 83.2?