EBK PRACTICE OF STATISTICS IN THE LIFE
4th Edition
ISBN: 9781319067496
Author: BALDI
Publisher: VST
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Chapter 15, Problem 15.17AYK
(a)
To determine
To find the probabilities of Type I and Type II errors for the test.
(b)
To determine
To find the power of the test against the given alternative.
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To evaluate the success of a 1-year experimental program designed to increase the mathematical achievement of underprivileged high school seniors, a random sample of participants in the program will be selected and their mathematics scores will be compared with the previous year’s statewide average of 525 for underprivileged seniors. The researchers want to determine whether the experimental program has increased the mean achievement level over the previous year’s statewide average. If alpha=.05, what sample size is needed to have a probability of Type II error of at most .025 if the actual mean is increased to 550? From previous results, sigma=80.
Chapter 15 Solutions
EBK PRACTICE OF STATISTICS IN THE LIFE
Ch. 15 - Prob. 15.1AYKCh. 15 - Prob. 15.2AYKCh. 15 - Prob. 15.3AYKCh. 15 - Prob. 15.4AYKCh. 15 - Prob. 15.5AYKCh. 15 - Prob. 15.6AYKCh. 15 - Prob. 15.8AYKCh. 15 - Prob. 15.9AYKCh. 15 - Prob. 15.10AYKCh. 15 - Prob. 15.11AYK
Ch. 15 - Prob. 15.12AYKCh. 15 - Prob. 15.13AYKCh. 15 - Prob. 15.14AYKCh. 15 - Prob. 15.15AYKCh. 15 - Prob. 15.16AYKCh. 15 - Prob. 15.17AYKCh. 15 - Prob. 15.18CYSCh. 15 - Prob. 15.19CYSCh. 15 - Prob. 15.20CYSCh. 15 - Prob. 15.21CYSCh. 15 - Prob. 15.22CYSCh. 15 - Prob. 15.23CYSCh. 15 - Prob. 15.24CYSCh. 15 - Prob. 15.25CYSCh. 15 - Prob. 15.26CYSCh. 15 - Prob. 15.27CYSCh. 15 - Prob. 15.28ECh. 15 - Prob. 15.29ECh. 15 - Prob. 15.30ECh. 15 - Prob. 15.31ECh. 15 - Prob. 15.32ECh. 15 - Prob. 15.33ECh. 15 - Prob. 15.34ECh. 15 - Prob. 15.35ECh. 15 - Prob. 15.36ECh. 15 - Prob. 15.37ECh. 15 - Prob. 15.38ECh. 15 - Prob. 15.39ECh. 15 - Prob. 15.40ECh. 15 - Prob. 15.41ECh. 15 - Prob. 15.42E
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