Answered: Select the incorrect answer. You can…

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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Select the incorrect answer. You can assume conditions are met to utilize the z-distribution.

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Test scores are normally distributed with a mean of 63 and standard deviation of 5. Given this information, the probability of observing a student scoring 60 or less is approximately 0.724.

Test scores are normally distributed with a mean of 63 and standard deviation of 5. Given this information, the probability of observing a student scoring 90 or less is approximately 1.0.

Test scores are normally distributed with a mean of 63 and standard deviation of 5. Given this information, the probability of observing a student scoring 60 or less is approximately 0.274.

Test scores are normally distributed with a mean of 63 and standard deviation of 5. Given this information, the probability of observing a student scoring 55 or less is approximately 0.055

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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