b. Compute the value of the test static.
c. 1. What is your decision regarding the Ho?
2. Can we conclude the mean is different from 100?
d. Estimate the p-value
Chapter 11:
Ex 2) A sample of 65 observations is selected from one population
with a population standard deviation of 0.75. The sample mean is
2.67. A sample of 50 observations is selected from a second
population with a population standard deviation of 0.66. The sample
mean is 2.59. Conduct of the following test of hypothesis using the
.08 significance level.
a.
b.
This is a ……… tailed test
State the decision rule
c. Compute the value of the test statistic
d. What is your decision regarding Ho?
e. What is the p-value?
Ex 8) The null and alternate hypotheses are:
A random sample of 15 observations from the first population
revealed a sample mean of 350 and a sample S.D of 12. A random
sample of 17 observations from the second population revealed a
sample mean of 342 and a sample S.D of 15.
At the .10 significance level, is there a difference in the population
means?
a. This is a ……… tailed test
b. The decision rule is to reject ……..