Choose the proportions of the scores of a trade school entrance exam when it exhibits the characteristics of normal distribution with mean and standard deviation 50 and 5, respectively.

a. What proportion of the scores on this examination would be greater than 60?

b. What proportion of the scores on this examination would be less than 45?

c. What proportion of the scores on this examination would be between 35 and 65?

D Question 6 5 pts An auditor has reviewed the nancial records of a hardware store and has found that its billing errors follow a normal distribution with mean and standard deviation equal to $0 and $1, respectively. What proportion of the store?s billings is in error by more than $1? [ Choose ] What is the probability that a billing represents an overcharge of at least $1.50? [ Choose ] What is the probability that a customer has been undercharged from $.50 to $1.00? [ Choose ] Within what range would 95% Choose of the billing errors be? [ 1 Of the extreme undercharges, 5% would be at least what amount? [ Choose ] Question 5 10 pts A large number of seeds from a certain species of ower are collected and mixed together in the following proportions according to the color of the owers they will produce: 2 red, 2 white, 1 blue. If these seeds are mixed and then randomly packaged in bags containing about 100 seeds, what is the probability that a bag will contain the following: a. At most 50% of white seeds? [ Select ] d b. At least 65 seeds that are not "white"? [ Select ] c. At least 25 but at most 45 "white" seed? [ Select ] d d. Within what limits would you expect the number of white seeds to lie with probability .95? from [Select] to [Select] A