MyLab Statistics with Pearson eText -- Standalone Access Card -- for Elementary Statistics

13th Edition

ISBN: 9780134748535

Author: Mario F. Triola

Publisher: PEARSON

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Chapter 9.4, Problem 3BSC

Testing Normality For the hypothesis test described in Exercise 2, the sample sizes are n₁ = 147 and n₂ = 153. When using the F test with these data, is it correct to reason that there is no need to check for normality because n₁ > 30 and n₂ > 30?

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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Chapter 9.4, Problem 2BSC

Chapter 9.4, Problem 4BSC

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MyLab Statistics with Pearson eText -- Standalone Access Card -- for Elementary Statistics

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Testing Normality For the hypothesis test described in Exercise 2, the sample sizes are n 1 = 147 and n 2 = 153. When using the F test with these data, is it correct to reason that there is no need to check for normality because n 1 > 30 and n 2 > 30?

Solution Summary: The author explains that the two samples are taken at random from the normally distributed populations without considering their sample sizes.

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Chapter 9 Solutions

Testing Normality For the hypothesis test described in Exercise 2, the sample sizes are n 1 = 147 and n 2 = 153. When using the F test with these data, is it correct to reason that there is no need to check for normality because n 1 &gt; 30 and n 2 &gt; 30?

Solution Summary: The author explains that the two samples are taken at random from the normally distributed populations without considering their sample sizes.

Videos

Want to see the full answer?

Chapter 9 Solutions

Testing Normality For the hypothesis test described in Exercise 2, the sample sizes are n 1 = 147 and n 2 = 153. When using the F test with these data, is it correct to reason that there is no need to check for normality because n 1 > 30 and n 2 > 30?