Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find , the 9th percentile. This is the bone density score separating the bottom 9% from the top 91%.

Which graph represents ? Choose the correct graph below.

(Please see the attachment)

 

The bone density score corresponding to is ____.

(Round to two decimal places as needed.)

 

 The score on a mathematics college entry exam are normally distributed with a mean of 68 and a standard deviation of 7.2. Students scoring higher than one standard deviation above the mean will not be enrolled in the mathematics tutoring program. How many of the 750 incoming students can be expected to be enrolled in the tutoring program?

The heights of young American women, in inches, are Normally distributed a with mean of u and a standard deviation of o=2.4. 31. The margin of error for a 99% confidence interval is desired to be t1 inch. What should be the sample size? A) 7 B) 22 C) 38 D) 39

Talluba juice factory produce orange juice in plastic bottles. The  volume of the bottle is normally disturbed with a mean of 1.804 L and standard deviation of 0.025 L .
Calculate the probability  that a randomly   chosen bottle of  juice wil have a volume less than 1.785.

Give your answer in 4 Decimal places