Question

a-The college of business was interested in comparing the attendance for four different class times for a business statistics class. They collected data for the class times (08:00, 10:00, 13:00 and 15:00) for each day (Monday to Friday) of a randomly selected week. Days is the

Select one:

a. treatment variable

b. has no special name

c. intersection

d. blocking variable

e. variation

b-The college of business was interested in comparing the attendance for four different class times for a business statistics class. They collected data for the class times (08:00, 10:00, 13:00 and 15:00) for each day (Monday to Friday) of a randomly selected week. Days is the

Select one:

a. treatment variable

b. has no special name

c. intersection

d. blocking variable

e. variation

Suppose we perform ANOVA to test the equality of five means at the 0.05 significance level. If we have 15 observations, what is the critical value?

Select one:

a. 3.48

b. 2.145

c. 1.96

d. 5.96

e. 9.488

5-) Given the following ANOVA table for  treatments each with  observations:

Suppose you want to test wheter the average costs of 3 departments in a large company are equal or not. What is the test statistic you have to use? Select one: a. b. c. d. e.

Answer 1

a)

Days is the

d. blocking variable

because it is categorization variable for information within a dataset that is used to control, test, or manipulate the distribution and statistical results.

b.

Numerator df = Number of groups - 1 = 5-1 = 4

Denominator = Number of observations - Number of groups = 15 - 5 = 10

Critical value of F at 0.05 significance level and df = 4, 10 is  3.478

a. 3.48

For Anova test, the test statistic you have to use is,

F statistic