Woof Chow Dog Food Company believes that it has a market share of 25 percent. It surveys n = 100 dog owners and ask whether or not Woof Chow is their regular brand of dog food, and 23 people say yes.
Based upon this information, what is the critical value if the hypothesis is to be tested at the 0.05 level of significance?A) 1.28
B) 1.645
C) 1.96
D) 2.575
Q. 2Which type of ANOVA can include interaction?
A) One-way
B) Randomized complete block
C) Two-factor
D) All types of ANOVA
Q. 3Woof Chow Dog Food Company believes that it has a market share of 25 percent. It surveys n = 100 dog owners and ask whether or not Woof Chow is their regular brand of dog food. The appropriate null and alternate hypotheses are:
A) H0 : = .25
Ha : .25
B) H0 : p = .25
Ha : p .25
C) H0 : = .25
Ha : .25
D) H0 : p .25
Ha : p > .25
Q. 4Which of the following is NOT one of the assumptions required by the randomized block design?
A) The populations are normally distributed.
B) The populations have equal means.
C) The observations within samples are independent.
D) The data measurement must be interval or ratio level.
Q. 5The manager of an online shop wants to determine whether the mean length of calling time of its customers is significantly more than 3 minutes. A random sample of 100 customers was taken. The average length of calling time in the sample was 3.
1 minutes with a standard deviation of 0.5 minutes. At a 0.05 level of significance, it can be concluded that the mean of the population is:A) significantly greater than 3.
B) not significantly greater than 3.
C) significantly less than 3.
D) not significantly different from 3.10.
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