Solve the following questions:

a) find p(x < 65)

b) p(x > = 72)

c) p(60 < x < 72)

d) how tall would you need to be to be among the tallest 5% of people in the school? "

Aresearch company wants to test the claim that a new multivitamin to improve short term memory. state the objective of the experiment, suggest a population, determine the experimental and control groups, and describe a sample procedure.

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).