A pizzeria offers three sizes of cola, small, medium, and large to accompany its pizza. Soft drinks cost $0.80, $0.90 and $1.20, respectively. Thirty percent of the orders correspond to the small size; 50%, to the medium, and 20%, to the large. Arrange the size of the soft drinks and the probability of sale into a probability distribution. a) Is it a discrete probability distribution? Please indicate why. b) Calculate the average amount charged per cola soft drink. c) What is the variance of the amount charged for a cola drink? What is the standard deviation?

A pizzeria offers three sizes of cola, small, medium, and large to accompany its pizza. Soft drinks cost $0.80, $0.90 and $1.20, respectively. Thirty percent of the orders correspond to the small size; 50%, to the medium, and 20%, to the large. Arrange the size of the soft drinks and the probability of sale into a probability distribution. a) Is it a discrete probability distribution? Please indicate why. b) Calculate the average amount charged per cola soft drink. c) What is the variance of the amount charged for a cola drink? What is the standard deviation?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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