a random sample of n = 25 individuals is selected from a population with u = 20 and a treatment administered to each individual in the sample. After treatment the sample mean is found to be m =22.2 with SS =384. a) how much difference is there between the mean for the treated sample and the mean for the original population? (Note: in a hypothesis test this value forms the numerator of the drastic). b) if there is no treatment effect how much difference is expected between the sample mean and is population mean? That is to find the standard error for m. c) based on the sample data does a treatment have a significant effect? use a two tailed test with (x = 0.05.
a random sample of n = 25 individuals is selected from a population with u = 20 and a treatment administered to each individual in the sample. After treatment the sample mean is found to be m =22.2 with SS =384. a) how much difference is there between the mean for the treated sample and the mean for the original population? (Note: in a hypothesis test this value forms the numerator of the drastic). b) if there is no treatment effect how much difference is expected between the sample mean and is population mean? That is to find the standard error for m. c) based on the sample data does a treatment have a significant effect? use a two tailed test with (x = 0.05.
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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a random sample of n = 25 individuals is selected from a population with u = 20 and a treatment administered to each individual in the sample. After treatment the sample
a) how much difference is there between the mean for the treated sample and the mean for the original population? (Note: in a hypothesis test this value forms the numerator of the drastic).
b) if there is no treatment effect how much difference is expected between the sample mean and is population mean? That is to find the standard error for m.
c) based on the sample data does a treatment have a significant effect? use a two tailed test with (x = 0.05.
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