The answer is D.
Assuming this is the apex question.
Answer:
Atleast 315
Step-by-step explanation:
Given that a journalist wants to determine the average annual salary of CEOs in the S&P 1,500. To save time a sample is taken.
s = sample std dev = 449300
Sample size = n
Margin of error = 50000
Z critical = 1.96
Hence 1.96*std error = 50000
std error = 25510.20
Std deviation/sqrt n = 25510.20
Simplify to get
![\sqrt{n} =\frac{449300}{25510.20} =17.752\\n=315\\](https://tex.z-dn.net/?f=%5Csqrt%7Bn%7D%20%3D%5Cfrac%7B449300%7D%7B25510.20%7D%20%3D17.752%5C%5Cn%3D315%5C%5C)
So sample size should be atleast 315
Answer:
median = 58
mean= 48.4
Step-by-step explanation:
to find the mean you add all of the numbers and divide it by 5 in this case
Answer:
O
Step-by-step explanation:
No, because the fraction is actually equal to a whole number. So it would be increased.