Answer:
Step-by-step explanation:
Its 17 15 and 8 i just did that on a test as well
srry no explanation :(
Answer:
The standard error of the mean = 5.14 mins
Step-by-step explanation:
Number of random sample (n) = 20
Mean(X) = 31.25 mins
Standard deviation (α) = 23.7 mins
Standard error of mean =
standard deviation / √sample size
= 23.7/√20
= 23.7/4.4721
= 5.14 mins
Answer: x=25 work below :)
I did not even understand that equation
