Please ass The daily water usage per person in Toledo, Ohio is normally distributed with a mean of 20 gallons and a standard deviation of 5 gallons. Let X be the daily water usage. a. What is the probability that a person selected at random will use less than 20 gallons per day? b. What is the probability that a person selected at random will use more than 20 gallons per day? c. What percent uses between 20 and 24 gallons?

Please ass The daily water usage per person in Toledo, Ohio is normally distributed with a mean of 20 gallons and a standard deviation of 5 gallons. Let X be the daily water usage. a. What is the probability that a person selected at random will use less than 20 gallons per day? b. What is the probability that a person selected at random will use more than 20 gallons per day? c. What percent uses between 20 and 24 gallons?

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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Question

Please ass
The daily water usage per person in Toledo, Ohio is normally distributed with a mean of 20 gallons and a standard deviation of 5 gallons. Let X be the daily water usage.

a. What is the probability that a person selected at random will use less than 20 gallons per day?

b. What is the probability that a person selected at random will use more than 20 gallons per day?

c. What percent uses between 20 and 24 gallons?

d. What is the probability that a person selected at random uses more than 28 gallons?

e. How many gallons or more do 10% of the population use?

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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