The histogram shows the reviewer ratings on a scale from 1 (lowest) to 5 (highest) of a recently published book Reviewer Ratings 05 (a) Find the mean, variance, and standard deviation of the probability distribution (b) Interpret the results 04 03 02 0.075 &01 0019, 001 (a) The mean is (Type an integer or a decimal. Do not round.) Probability 0212 0247 Rating 0.447 Question 7, 4.1.34 Part 1 of 4 1 (lowest) to 5 (highest) of a recently published book. probability distribution. GOOD points O Points: 0 of 4 0.5 0.4 0.3 02 0.1 0.019 0.01 Probability Reviewer Ratings 0.075 0.212 0247 Rating 0.447 F S Save Q Incorrect: