SOLUTION: 5. Assume that among diabetics the fasting blood level of glucose is approximately normally distribute with a mean of 105 mg per 100 ml and SD of 9 mg per 100 ml. a) What propo

Question 1194956: 5. Assume that among diabetics the fasting blood level of glucose is approximately normally distribute with a mean of 105 mg per 100 ml and SD of 9 mg per 100 ml.
a) What proportions of diabetics have levels between 90 and 120 mg per 100 ml?
b) What proportions of diabetics have levels below 85.4 mg per 100 ml?
c) What level cuts of the lower 15% of diabetics?
d) What are the two levels which encompass 95% of diabetics?

Answer by ikleyn(52915) (Show Source): You can put this solution on YOUR website!
.

It is about finding the area under the normal curve.

Use free of charge online calculator

https://onlinestatbook.com/2/calculators/normal_dist.html

specially intended for this purpose.

If you are unfamiliar with this class of problems (as I may assume,
since you posted them to this forum), then using this calculator
is the best and the easiest way to get introductory knowledge about it.

After solving 2-3-4 similar problems with this calculator,
you can switch to similar solver in pocket calculators -
you will be ready and will be prepared for it.

RELATED QUESTIONS
A standard test for diabetes is based on glucose levels in the blood after fasting for a... (answered by stanbon)

For patients who have been given a diabetes test, blood-glucose readings are... (answered by Boreal)

A person's level of blood glucose and diabetes are closely related. Let x be a random... (answered by Boreal)

Let x be a random variable that represents the level of glucose in the blood (milligrams... (answered by ewatrrr)

A seller claimed that her lip tint has a mean organic content of 90%. A rival seller... (answered by Boreal)

Assume that blood pressure readings are normally distributed with a mean of 118 and a... (answered by Fombitz,rothauserc)

A person's blood glucose level and diabetes are closely related. Let x be a random... (answered by stanbon)

A person's blood glucose level and diabetes are closely related. Let x be a random... (answered by ewatrrr)