IQ scores are normally distributed with a mean of 100 and a standard deviation of 15. Membership in Mensa requires an IQ score above 131.5. (a) If one person is randomly selected from the general population, find the probability of getting someone with an IQ score of at least 131.5. (b) If a random sample of 3 people is selected from the general population, find the probability of them having a mean IQ of at least 131.5.

Someone answer asap for ! max recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a. the median of max’s data is 250 b. more than half of the data points max recorded were 177 centimeters. c. a data point chosen at random is as likely to be above the mean as it is to be below the mean. d. every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.