An evaluation of 300 restaurant was conducted. Each restaurant recieved a rating on a 3 point scale on typical meal price (1 least expensive to most expensive) and quality (1 lowest to 3 greatest quality). A cross tabulation on the rating data is shown. Forty two of the restaurants received a rating of 1 on quality and 1 on meal price, 39 of the restaurants recieved the highest rating of 3 on both quality and meal price. A bivariate probability distribution for quality and meal price of a randomly selected restaurant is provided. x is the wuality rating and y is the meal price. Meal price (y) 1 2 3 Total Quality (x) 1 0.14 0.13 0.01 0.28 2 0.11 0.21 0.18 0.5 3 0.01 0.05 0.16 0.22 Total 0.26 0.39 0.35 1 A. Compute the expected value and variance for wuality rating, x. B. Compute the expected value and variance for meal price. y
An evaluation of 300 restaurant was conducted. Each restaurant recieved a rating on a 3 point scale on typical meal price (1 least expensive to most expensive) and quality (1 lowest to 3 greatest quality). A cross tabulation on the rating data is shown. Forty two of the restaurants received a rating of 1 on quality and 1 on meal price, 39 of the restaurants recieved the highest rating of 3 on both quality and meal price. A bivariate probability distribution for quality and meal price of a randomly selected restaurant is provided. x is the wuality rating and y is the meal price.
Meal price (y) | |||||
1 | 2 | 3 | Total | ||
Quality (x) | 1 | 0.14 | 0.13 | 0.01 | 0.28 |
2 | 0.11 | 0.21 | 0.18 | 0.5 | |
3 | 0.01 | 0.05 | 0.16 | 0.22 | |
Total | 0.26 | 0.39 | 0.35 | 1 |
A. Compute the
B. Compute the expected value and variance for meal price. y
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