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111. (10) Suppose an activity is binomially distributed with p = .7. The activity is carried out sixty times. a. Find the mean of this

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111. (10) Suppose an activity is binomially distributed with p = .7. The activity is carried out sixty times. a. Find the mean of this activity. b. Find the standard deviation. IV.(15) The results on a standardized exam are approximately normally distributed. If the average on the test is 66 with a standard deviation of 7.0 a. What is the probability that a randomly selected exam is a score higher than 73? b. How many standard deviations away from the mean is 59? c. What is the probability that a randomly selected exam is between 59 and 90? V. (10) An experiment consists of tossing a coin 144 times. Let X be the number of tails. Find P(X > 84)

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