A Sample Is Selected from a Population with µ =

question 74

Essay

A sample is selected from a population with µ = 80.After a treatment is administered to the individuals,the sample mean is found to be M = 75 and the variance is s2 = 100.
a. If the sample has n = 4 scores, then calculate the estimated standard error and determine whether the sample is sufficient to conclude that the treatment has a significant effect? Use a two-tailed test with α = .05.
b. If the sample has n = 25 scores, then calculate the estimated standard error and determine whether the sample is sufficient to conclude that the treatment has a significant effect? Use a two-tailed test with α = .05.
c. Describe how increasing the size of the sample affects the standard error and the likelihood of rejecting the null hypothesis.

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Definitions:

Pluralism

A concept in sociology and political science that acknowledges a diverse society where multiple groups maintain their independent cultural traditions.

High-context

A communication style where most of the information is either in the physical context or internalized in the person, with very little in the coded, explicit part of the message.

Ethnocentrism

The belief in the inherent superiority of one's own ethnic group or culture.

Complete

Fully finished or containing all the necessary or appropriate parts.