Arsenic occurs naturally in very low concentrations. In healthy human adults arsenic blood concentrations are approximately Normally...

60.1K

Verified Solution

Question

Basic Math

Arsenic occurs naturally in very low concentrations. In healthyhuman adults arsenic blood concentrations are approximatelyNormally distributed with mean 3.9 ?g/dL (micrograms per decilitre)and standard deviation 1.4 ?g/dL. For the purposes of thisquestion, assume that the distribution of arsenic bloodconcentrations is exactly as just described.
(a) What proportion of healthy adults have arsenic bloodconcentrations between 2 and 4.5 ?g/dL?
b) Choosing a healthy adult at random, what is the chance thattheir arsenic blood concentration exceeds 6.8 ?g/dL?
(c) What are the lower and upper limits of the middle 80% ofarsenic blood concentrations in healthy human adults?

Answer & Explanation Solved by verified expert

4.0 Ratings (640 Votes)

Let X be the concentration of the arsenic in the blood ofhealthy human adults Given X follows a normal distribution withmean 39 gdL and a standard See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member