Exercise 7.8 gave the following probability distribution for x = the number of courses for which a

Question:

Exercise 7.8 gave the following probability distribution for x = the number of courses for which a randomly selected student at a certain university is registered:

image

For this probability distribution, ? = 4.66 and ? = 1.20.

a. Because ? - ? = 3.46, the x values 1, 2, and 3 are more than 1 standard deviation below the mean. What is the probability that x is more than 1 standard deviation below its mean? See Example 7.13.

b. What x values are more than 2 standard deviations away from the mean value (either less than ? - 2? or greater than ? + 2?)?

c. What is the probability that x is more than 2 standard deviations away from its mean value?

Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question

Introduction To Statistics And Data Analysis

ISBN: 9781337793612

6th Edition

Authors: Roxy Peck, Chris Olsen, Tom Short

Question Posted: