Find the standard deviation, _, for the binomial distribution which has the stated values of n and p. n=38; p=2/5

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

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