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9. To evaluate the effect of a treatment, a sample is obtained from a population with a mean of pu = 30, and the treatment is administered to the individuals %3D in the sample. After treatment, the sample mean is found to be M = 31.3 with a standard deviation of s = 3.

9. To evaluate the effect of a treatment, a sample is obtained from a population with a mean of pu = 30, and the treatment is administered to the individuals %3D in the sample. After treatment, the sample mean is found to be M = 31.3 with a standard deviation of s = 3.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Remember, begin with a null statement about the independent variable ( ex: the treatment had no effect for a two tail or for a one tail, state direction, the supplement did not decrease..) Use equal and not equal signs for two tail and use greater than and less than signs for one tail.
Transcribed Image Text:Remember, begin with a null statement about the independent variable ( ex: the treatment had no effect for a two tail or for a one tail, state direction, the supplement did not decrease..) Use equal and not equal signs for two tail and use greater than and less than signs for one tail.
9. To evaluate the effect of a treatment, a sample is obtained from a population with a mean of µ = 30, and the treatment is administered to the individuals in the sample. After treatment, the sample mean is found to be M = 31.3 with a standard deviation of s = 3. a. If the sample consists of n = 16 individuals, are the data sufficient to conclude that the treatment has a significant effect using a two-tailed test with a = .05? b. If the sample consists of n = 36 individuals, are the data sufficient to conclude that the treatment has a significant effect using a two-tailed test with α=.05? c. Comparing your answer for parts a and b, how does the size of the sample influence the outcome of a hypothesis test?
Transcribed Image Text:9. To evaluate the effect of a treatment, a sample is obtained from a population with a mean of µ = 30, and the treatment is administered to the individuals in the sample. After treatment, the sample mean is found to be M = 31.3 with a standard deviation of s = 3. a. If the sample consists of n = 16 individuals, are the data sufficient to conclude that the treatment has a significant effect using a two-tailed test with a = .05? b. If the sample consists of n = 36 individuals, are the data sufficient to conclude that the treatment has a significant effect using a two-tailed test with α=.05? c. Comparing your answer for parts a and b, how does the size of the sample influence the outcome of a hypothesis test?
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