PLEASE HELP The difference of the sample means of two populations is 34.6, and the standard deviation of the difference of the sample means 11.9.

The 95% confidence interval lies between and .
First BLANK:

A. -11.9
B. -23.8
C. -35.7
D. -45.4

Second BLANK:

A. +11.9
B. +23.8
C. +35.7
D. +45.4

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Last year, a state university received 3,560 applications from boys. of those applications, 35 percent were from boys who lived in other states. part a)how many applications did the university receive from boys who lived in other states? part b)applications to the university from boys represented 40percent of all applications. how many applications did the university receive in all? i don't how to do part b so me and plz tell how you got your answer

Two airplanes start at the same place and travel in opposite directions,one at 395 miles per hour and the other at 422 miles per hour. how many hours will it take for the planes to be 2451 miles apart?