6. Answer the following questions using your standard normal distribution table. A. Wechsler adult intelligence scores vary according to a Normal distribution with =110 and =12. What is the probability that a person receives a score less than 95 assuming a normal distribution? B. Using the Z-table, identify the z-value for the 95th percentile on a standard normal distribution

6. Answer the following questions using your standard normal distribution table. A. Wechsler adult intelligence scores vary according to a Normal distribution with =110 and =12. What is the probability that a person receives a score less than 95 assuming a normal distribution? B. Using the Z-table, identify the z-value for the 95th percentile on a standard normal distribution

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

6. Answer the following questions using your standard normal distribution table.

A. Wechsler adult intelligence scores vary according to a Normal distribution with =110 and =12. What is the probability that a person receives a score less than 95 assuming a normal distribution?

B. Using the Z-table, identify the z-value for the 95^th percentile on a standard normal distribution

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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