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mandatory competency test for high school sophomores has a normal distribution with a mean of 425 and a standard deviation of 83 . Round the final answers to the nearest whole number and intermediate

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

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section: Chapter Questions

Problem 22SGR

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Question

A mandatory competency test for high school sophomores has a normal distribution with a mean of

425

and a standard deviation of

. Round the final answers to the nearest whole number and intermediate

-value calculations to

decimal places.

The top

of students receive

$500

. What is the minimum score you would need to receive this award?

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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