is known that people in the USA spend on average 18 hours a day using electronic devices with a standard deviation of 5.8 hours. This data follows a normal distribution. What is the probability someone spends more than 20 hours using electronic devices a day? (round your answer to 4 decimals) It is known that people in the USA spend on average 16 hours a day using electronic devices with a standard deviation of 3.5 hours. This data follows a normal distribution. What is the probability someone spends more than 13 hours using electronic devices a day? (round your answer to 4 decimals)

is known that people in the USA spend on average 18 hours a day using electronic devices with a standard deviation of 5.8 hours. This data follows a normal distribution. What is the probability someone spends more than 20 hours using electronic devices a day? (round your answer to 4 decimals) It is known that people in the USA spend on average 16 hours a day using electronic devices with a standard deviation of 3.5 hours. This data follows a normal distribution. What is the probability someone spends more than 13 hours using electronic devices a day? (round your answer to 4 decimals)

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

It is known that people in the USA spend on average 18 hours a day using electronic devices with a standard deviation of 5.8 hours. This data follows a normal distribution. What is the probability someone spends more than 20 hours using electronic devices a day? (round your answer to 4 decimals)

It is known that people in the USA spend on average 16 hours a day using electronic devices with a standard deviation of 3.5 hours. This data follows a normal distribution. What is the probability someone spends more than 13 hours using electronic devices a day? (round your answer to 4 decimals)

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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