Answer:
E) .0863
Step-by-step explanation:
Previous concepts
Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".
The population proportion have the following distribution
Solution to the problem
For this case we can find the sample proportion for each observation with the following formula:

Where X represent the number of returns and n =100 for each case since the standard value used. Using the last formula we got:










And now witht those values we can find the sample mean of proportions with the following formula:

And we can find the standard error with the following formula:

So then the best option on this case is given by:
E) .0863
Answer:
(x + 12) / 4
Explanation:
This was the way I was taught, hopefully it helps you.
y = 4x - 12
x = 4y - 12
x + 12 = 4y
(x + 12) / 4 = y
Answer:
Step-by-step explanation:
8 + 6 x the sum of 8 + 6 = 84
Answer:
A pair of linear functions
Step-by-step explanation:
Answer:
Aaron completed the race in 9 days. Mitch finished in the race in 8 days 20 hours. Dallas finished in 8 days 18 hours
Step-by-step explanation:
1. Dallas won the race. 8 days 18 hours
2. Mitch came in second. 2 days 5 hours x 4= 8 days 20
3. Aaron was 3rd. 4 days 12 hours x 2= 9 days