A sample is selected from a population mean of u = 30. A treatment is administered to the individuals in the sample and, after treatment, the sample mean found to be M = 31.3 with a sample variance of s² = 12. If the sample consists of n = 16 individuals, are the data sufficient to conclude a. %3D that there is a significant treatment effect using a two-tailed test with a = .05? b. If the sample consists of n = 36 individuals, are the data sufficient to conclude %3D that there is a significant treatment effect using a two-tailed test with a = .05?

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11.2
A sample is selected from a population mean of u = 30. A treatment is administered
to the individuals in the sample and, after treatment, the sample mean found to be M
= 31.3 with a sample variance of s? = 12.
If the sample consists of n = 16 individuals, are the data sufficient to conclude
a.
that there is a significant treatment 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 there is a significant treatment effect using a two-tailed test with a =.05?
Transcribed Image Text:11.2 A sample is selected from a population mean of u = 30. A treatment is administered to the individuals in the sample and, after treatment, the sample mean found to be M = 31.3 with a sample variance of s? = 12. If the sample consists of n = 16 individuals, are the data sufficient to conclude a. that there is a significant treatment 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 there is a significant treatment effect using a two-tailed test with a =.05?
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