Practice of Statistics in the Life Sciences
4th Edition
ISBN: 9781319013370
Author: Brigitte Baldi, David S. Moore
Publisher: W. H. Freeman
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Question
Chapter 18, Problem 18.24E
a.
To determine
To obtain a 95% confidence interval for the difference in mean weight changeafter 15 weeks for obese children who receive professional food counselling and obese children who do not.
b.
To determine
To give a 95% confidence interval for the mean weight change after 15 weeks for those children who receive professional food counselling.
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Find the z score that corresponds to the given area 30% below z.
Find the following probability P(z<-.24)
3. Explain why the following statements are not correct.
a. "With my methodological approach, I can reduce the
Type I error with the given sample information without
changing the Type II error."
b. "I have already decided how much of the Type I error I
am going to allow. A bigger sample will not change either
the Type I or Type II error."
C.
"I can reduce the Type II error by making it difficult to
reject the null hypothesis."
d. "By making it easy to reject the null hypothesis, I am
reducing the Type I error."
Chapter 18 Solutions
Practice of Statistics in the Life Sciences
Ch. 18 - Prob. 18.1AYKCh. 18 - Prob. 18.2AYKCh. 18 - Prob. 18.3AYKCh. 18 - Prob. 18.4AYKCh. 18 - Prob. 18.5AYKCh. 18 - Prob. 18.6AYKCh. 18 - Prob. 18.7AYKCh. 18 - Prob. 18.8AYKCh. 18 - Prob. 18.9AYKCh. 18 - Prob. 18.10AYK
Ch. 18 - Prob. 18.11CYSCh. 18 - Prob. 18.12CYSCh. 18 - Prob. 18.13CYSCh. 18 - Prob. 18.14CYSCh. 18 - Prob. 18.15CYSCh. 18 - Prob. 18.16CYSCh. 18 - Prob. 18.17CYSCh. 18 - Prob. 18.18CYSCh. 18 - Prob. 18.19CYSCh. 18 - Prob. 18.20CYSCh. 18 - Prob. 18.21ECh. 18 - Prob. 18.22ECh. 18 - Prob. 18.23ECh. 18 - Prob. 18.24ECh. 18 - Prob. 18.25ECh. 18 - Prob. 18.26ECh. 18 - Prob. 18.27ECh. 18 - Prob. 18.28ECh. 18 - Prob. 18.29ECh. 18 - Prob. 18.30ECh. 18 - Prob. 18.31ECh. 18 - Prob. 18.32ECh. 18 - Prob. 18.33ECh. 18 - Prob. 18.34ECh. 18 - Prob. 18.35ECh. 18 - Prob. 18.36ECh. 18 - Prob. 18.37ECh. 18 - Prob. 18.38ECh. 18 - Prob. 18.39ECh. 18 - Prob. 18.40ECh. 18 - Prob. 18.41ECh. 18 - Prob. 18.42ECh. 18 - Prob. 18.43E
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