For margin of error to be a maximum of 3:
3 = z*(SD / sqrt(n)), where z is the z-score, SD is the standard deviation and n is the sample size.
z = 1.96 for a 95% confidence interval, and we are given SD = 15.
3 = 1.96*15/sqrt(n)
sqrt(n) = 9.8
n = 96.04 ~ 96 commercials.
Answer:
15 metal post
Step-by-step explanation:
all you have to do is divide 20 into 300
J would have to say that the answer is d. im sorry if im wrong.
Answer:
32m + 24n
Step-by-step explanation:
Distribute the 8 to the other terms.
8(4m + 3n)
32m + 24n