Answer:
609
Step-by-step explanation:
Standard deviation =
= $30
Margin of error = E = $2
Confidence level = 90%
Since the distribution is said to be normal, we will use z scores to solve this problem.
The z score for 90% confidence level = z = 1.645
Sample size= n = ?
The formula to calculate the margin of error is:

Using the values in above equation, we get:

This means, the minimum number of observations required is 609
Answer:
your answer will be <em><u>A. 38.5°</u></em>
Step-by-step explanation:
m<ZYW=1/2(77)
<u>=38.5</u>
<u>hope</u><u> </u><u>it</u><u> </u><u>helps</u><u>.</u><u>.</u>
Answer:
D and C
Step-by-step explanation:
I don't really know if my answers are even correct but I did some research on them. I don't want to waste your time --or mine.
Answer:
C
Step-by-step explanation:
The radius is 4 making the diameter 16 you need the other side since in half so that leaves you with answer C...16
Answer:
i think it's A if I'm wrong then wow