assume that scores on a bone mineral density test are normally distributed with a mean of 0 and a standard deviation of 1

Assume that scores on a bone mineral density test are normally distributed with a mean ofO and a standard deviation of 1. a. Find the z-score that separate the lowest 9% of scores from the highest 91%. b. For a randomly selected subject, find the probability of a score greater than -2.93. c. For a randomly selected subject, find the probability of a score between 0.87 and 1.78