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b. What is the distribution of ? x N 7.4300✔ 7 0.0506 X c. What is the distribution of Σα? Σ X - N( 334.35, 4617.2(X d. What is the probability that one randomly selected customer will spend more than $7.3424?

b. What is the distribution of ? x N 7.4300✔ 7 0.0506 X c. What is the distribution of Σα? Σ X - N( 334.35, 4617.2(X d. What is the probability that one randomly selected customer will spend more than $7.3424?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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selected. Please answer the following questions, and round all answers to 4 decimal places where possible and assume a normal distribution. a. What is the distribution of X? X - N 7.4300 ✓ 1.5100) o b. What is the distribution of x? - N 7.4300 ✓ 0.0506 X c. What is the distribution of Σx? Σ - N( 334.35, 4617.2(X d. What is the probability that one randomly selected customer will spend more than $7.3424? 0.7190 X e. For the 45 customers, find the probability that their average spent is more than $7.3424. 0.5514 X f. Find the probability that the randomly selected 45 customers will spend more than $330.4080. X g. For part e) and f), is the assumption of normal necessary? Yes No o h. The owner of Don Mcalds gives a coupon for a free sundae to the 3% of all groups of 45 people who spend the most money. At least how much must a group of 45 spend in total to get the free sundae? 10 2537 myopenmath.com DO AA D
Transcribed Image Text:selected. Please answer the following questions, and round all answers to 4 decimal places where possible and assume a normal distribution. a. What is the distribution of X? X - N 7.4300 ✓ 1.5100) o b. What is the distribution of x? - N 7.4300 ✓ 0.0506 X c. What is the distribution of Σx? Σ - N( 334.35, 4617.2(X d. What is the probability that one randomly selected customer will spend more than $7.3424? 0.7190 X e. For the 45 customers, find the probability that their average spent is more than $7.3424. 0.5514 X f. Find the probability that the randomly selected 45 customers will spend more than $330.4080. X g. For part e) and f), is the assumption of normal necessary? Yes No o h. The owner of Don Mcalds gives a coupon for a free sundae to the 3% of all groups of 45 people who spend the most money. At least how much must a group of 45 spend in total to get the free sundae? 10 2537 myopenmath.com DO AA D
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