How would one solve this question? What steps should I follow? Suppose the values are successively chosen from the standard normal distribution. How large must a value be to be amongst the largest 15% of all values selected?

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?

If f(x)=x+7 and g(x)=1/x what is (fog)(x)