in a recently conducted study, families reported using an average of 70 gallons of gasoline per month with a standard deviation of 9 gallons. If a family is chosen at random, what is the probability that it uses between 80 and 86 gallons of gasoline per month? Assume the data is normally distributed. (ANSWER MUST BE 4 DIGITS

in a recently conducted study, families reported using an average of 70 gallons of gasoline per month with a standard deviation of 9 gallons. If a family is chosen at random, what is the probability that it uses between 80 and 86 gallons of gasoline per month? Assume the data is normally distributed. (ANSWER MUST BE 4 DIGITS

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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(ANSWER MUST BE 4 DIGITS)

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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