Answered: 1. Pacc Yao is a regular at a certain…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.4: Distributions Of Data

Problem 19PFA

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1. Pacc Yao is a regular at a certain fast-food restaurant. Suppose the time X between the moment Pacc enters the restaurant and the moment he is served his food is normally distributed with mean 8.3 minutes and standard deviation of 4.2 minutes. Find the probability that the average time until he is served in 30 randomly selected visits to the restaurant will be at least 10 minutes.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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