+
A HYDROLOGIST COLLECTS A LITER OF WATER FROM EACH OF 80 RANDOM LOCATIONS

A HYDROLOGIST COLLECTS A LITER OF WATER FROM EACH OF 80 RANDOM LOCATIONS

Rating:
Rating
(0)
Author: Christine Farr
Description:

http://theperfecthomework.com/a-hydrologist-collects-a-liter-of-water-from-each-of-80-random-locations/

A hydrologist collects a liter of water from each of 80 random locations along a stream and measures the amount of dissolved oxygen in each specimen. Suppose that we know that dissolved oxygen varies among locations according to a normal distribution with mean of 5 milligrams per liter (mg/l) and standard deviation of 0.92. Let X be the average oxygen content of the 80 specimens. The observed mean is 4.62 mg/l.(a) Find the mean and the standard deviation of X(b) What distribution does X follow?(c) What is the probability that X is at most the observed value of 4.62?

(more)
See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

25 Sophia partners guarantee credit transfer.

221 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 20 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial