c. The test statistic is t= ………..
d. What is your decision regarding Ho?
e. The p-value is between 0.1 and 0.2?
Ex 14) The null and alternate hypotheses are:
A random sample of 20 items from the first population showed a
mean of 100 and a S.D of 15. A sample of 16 items from the second
population showed a mean of 94 and a S.D of 8.
Use the .05 significance level
a. Find the degrees of freedom for unequal variance test
b. State the decision rule for .05 significance level?
c. Compute the value of test statistic.
d. What is your decision regarding null hypothesis?
Chapter 12:
Ex 8) The following are six observations collected from treatment 1,
four observations collected from treatment 2, and five observation
collected from treatment 3. Test the hypothesis at the 0.05
significance level that the treatment means are equal.
a. State the null and the alternate hypothesis.
b. What is the decision rule?
c. Compute SST SSE, SS total
d. Complete the ANOVA table.
e. State your decision regarding null hypothesis?