10th Edition

ISBN: 9780321989178

Author: Neil A. Weiss

Publisher: PEARSON

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Textbook Question

Chapter 9.7, Problem 192E

In Exercises 9.191–9.196, we have given a hypothesis testing situation and (i) the population standard deviation, σ, (ii) a significance level, (iii) a sample size, and (iv) some values of μ_a. For each exercise,

a. determine the probability of a Type I error.
b. apply Procedure 9.4 on page 425 to determine the probability of a Type II error for the first given value of μ_a.
c. apply Procedure 9.5 on page 427 to construct a power curve based on the given values of μ_a.

9.192 Grey-Seal Nursing. The null and alternative hypotheses obtained in Exercise 9.16 on page 375 are, respectively,

H₀: μ = 23 days

H_a: μ ≠ 23 days,

where μ is the mean lactation period of grey seals.

i. σ = 3.0

ii. α = 0.05

iii. n = 14

iv. μ_a = 20.5, 21.0, 21.5, 22.0, 22.5, 23.5, 24.0, 24.5, 25.0, 25.5

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 9.7, Problem 191E

Chapter 9.7, Problem 193E

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Chapter 9 Solutions

Introductory Statistics (10th Edition)

Ch. 9.1 - Explain the meaning of the term hypothesis as used...Ch. 9.1 - Regarding the term null hypothesis: a. Originally,...Ch. 9.1 - What role does the decision criterion play in a...Ch. 9.1 - Suppose that you want to perform a hypothesis test...Ch. 9.1 - Suppose that you are considering a hypothesis test...Ch. 9.1 - Suppose that, in a hypothesis test, the null...Ch. 9.1 - Suppose that, in a hypothesis test, the null...Ch. 9.1 - What is the relation between the significance...Ch. 9.1 - Answer true or false and explain your answer: If...Ch. 9.1 - Answer true or false and explain your answer: For...

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Solution Summary: The author explains the probability of Type I error for the given data. The population standard deviation is 3 and the level of significance is 0.05.

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