10. A random sample is selected from a normal popula- tion with a mean of u = 30 and a standard deviation 8. After a treatment is administered to the of o individuals in the sample, the sample mean is found to be M = 33. a. If the sample consists of n sample mean sufficient to conclude that the treat. ment has a significant effect? Use a two-tailed test 16 scores, is the %3D with a = = .05.

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b. If the sample consists of n = 64 scores, is the
ment has a significant effect? Use a two-tailed test
10. A random sample is selected from a normal popula-
= 30 and a standard deviation
of g = 8. After a treatment is administered to the
individuals in the sample, the sample mean is found to
tion with a mean of u
%3D
be M = 33.
%3D
a. If the sample consists of n
sample mean sufficient to conclude that the treat.
16 scores, is the
%3D
Inc
with a = .05.
sample mean sufficient to conclude that the
Transcribed Image Text:b. If the sample consists of n = 64 scores, is the ment has a significant effect? Use a two-tailed test 10. A random sample is selected from a normal popula- = 30 and a standard deviation of g = 8. After a treatment is administered to the individuals in the sample, the sample mean is found to tion with a mean of u %3D be M = 33. %3D a. If the sample consists of n sample mean sufficient to conclude that the treat. 16 scores, is the %3D Inc with a = .05. sample mean sufficient to conclude that the
treatment has a significant effect? Use a two-tailed
test with a = .05.
c. Comparing your answers for parts a and b, explain
how the size of the sample influences the outcome
of a hypothesis test.
Transcribed Image Text:treatment has a significant effect? Use a two-tailed test with a = .05. c. Comparing your answers for parts a and b, explain how the size of the sample influences the outcome of a hypothesis test.
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