Answer:
CI = (70.861 , 94.418)
Step-by-step explanation:
In order to determine the 90% confidence interval you use the following formula (for a population approximately normal):
(1)
: mean = 82.64
σ: standard deviation = 14.32
n: sample = 4
α: tail area = 1 - 0.9 = 0.1
Z_α/2 = Z_0.05: Z factor = 1.645
You replace these values and you obtain:

The confidence interval will be:

The 90% confidence interval is (70.861 , 94.418)
The shadow of the tree is about 17.955 feet long.
I believe it is false because it only passes through the y-axis not the x-axis.
Answer:
-6
Step-by-step explanation:
Answer:
y = V x2 +2 over 5
Step-by-step explanation: