The histogram shows the reviewer ratings on a scale from 1 (lowest) to 5 (highest) of a recently published book. Reviewer Ratings 0.5- 0.439 (a) Find the mean, variance, and standard deviation of the probability distribution. (b) Interpret the results. 0.4 0.3- 0.2 0.1- 0.020 0.0 0.243 0.213 0.085 1 2 3 4 Rating (a) The mean is (Type an integer or a decimal. Do not round.) The variance is (Round to two decimal places as needed.) The standard deviation is ten (Round to two decimal places as needed.) eso (b) Interpret the results. Select all that apply. A. The average rating for the book is approximately 4 cces B. The average rating for the book is approximately 1. ucces C. Most of the ratings differ from the average rating by about 3 or 4 D. Most of the ratings differ from the average rating by about 1 or 2 ia Libr Optio ? Click to select your answer(s). ons Tools 11:59pm T NOV *tv W MacBook Pro Probability 5

Question
The histogram shows the reviewer ratings on a scale from 1 (lowest) to 5 (highest) of a recently published book.
Reviewer Ratings
0.5-
0.439
(a) Find the mean, variance, and standard deviation of the probability distribution.
(b) Interpret the results.
0.4
0.3-
0.2
0.1- 0.020
0.0
0.243
0.213
0.085
1
2
3
4
Rating
(a) The mean is
(Type an integer or a decimal. Do not round.)
The variance is
(Round to two decimal places as needed.)
The standard deviation is
ten
(Round to two decimal places as needed.)
eso
(b) Interpret the results. Select all that apply.
A. The average rating for the book is approximately 4
cces
B. The average rating for the book is approximately 1.
ucces
C. Most of the ratings differ from the average rating by about 3 or 4
D. Most of the ratings differ from the average rating by about 1 or 2
ia Libr
Optio
?
Click to select your answer(s).
ons
Tools
11:59pm
T
NOV
*tv
W
MacBook Pro
Probability
5
Expand
Transcribed Image Text

The histogram shows the reviewer ratings on a scale from 1 (lowest) to 5 (highest) of a recently published book. Reviewer Ratings 0.5- 0.439 (a) Find the mean, variance, and standard deviation of the probability distribution. (b) Interpret the results. 0.4 0.3- 0.2 0.1- 0.020 0.0 0.243 0.213 0.085 1 2 3 4 Rating (a) The mean is (Type an integer or a decimal. Do not round.) The variance is (Round to two decimal places as needed.) The standard deviation is ten (Round to two decimal places as needed.) eso (b) Interpret the results. Select all that apply. A. The average rating for the book is approximately 4 cces B. The average rating for the book is approximately 1. ucces C. Most of the ratings differ from the average rating by about 3 or 4 D. Most of the ratings differ from the average rating by about 1 or 2 ia Libr Optio ? Click to select your answer(s). ons Tools 11:59pm T NOV *tv W MacBook Pro Probability 5

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