Ex 12) From the given data of retail and banking stock
a.
Using the .05 level of significance, is there a difference in the
mean rate of return among the three types of stock?
b.
Can the analyst conclude there is a difference between the mean
rates of return for utility and retail stocks? For utility and banking
stocks? For banking and a retail stocks? Explain
Ex 18) There are three hospitals in the Tulsa, Oklahoma area. The
following data show the number of outpatient surgeries performed on
Monday, Tuesday, Wednesday, Thursday, and Friday at a each
hospital last week. At the 0.05 significance level, can we conclude
there is a difference in the mean number of surgeries performed by
hospital or by day of the week?
a. Set up the null hypothesis and the alternative hypothesis.
b. Alternative hypothesis
c. For blocks
d. Alternative hypothesis
e. State the decision for .05 significance level
f. Complete the ANOVA table
g. State your decision regarding null hypothesis?
h. The decision for F value at 0.05 significance is:
i.
Can we conclude there is a difference in the mean number of
surgeries performed by hospital or by day of the week?
Chapter 13:
EX. 16) Mr.James McWhinney, president Daniel-James Financial
Services, believes there is a relationship between number of client
contacts and the dollar amount of sales. To document this assertion,
Mr.McWhinney gathered the following sample information. The X