Yes, it can be concluded that pass/fail rates are dependent on school because the p-
value = 0.0627.
No, it cannot be concluded that pass/fail rates are dependent on school because the p-
value = 0.9373.
independent of, dependent on
independent of; independent on
dependent of, dependent on
dependent of, independent on

Question 14
1 / 1 point
A manufacturing company knows that their machines produce parts that are defective on occasion. They
have 4 machines producing parts, and want to test if defective parts are dependent on the machine that
produced it. They take a random sample of 321 parts and find the following results. Test at the 0.05 level
of significance.
Machine 1
Machine 2
Machine 3
Machine 4
Defective
10
15
16
9
Non-Defective
72
75
66
58
Can it be concluded that number of defective parts is dependent on machine?

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Question 15
1 / 1 point
You're running a
χ
2
Independence Test to see if there is an association between age (Under 50/50+) and
type of car owned (Sedan/SUV/Truck/Other). You find a
χ
2
test statistic of 5.491. What is the p-value
and conclusion?

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Question 16
1 / 1 point
You are conducting a study of three types of feed supplements for cattle to test their effectiveness in
producing weight gain among calves whose feed includes one of the supplements. You have four groups
of 30 calves (one is a control group receiving the usual feed, but no supplement). You will conduct a
one-way ANOVA after one year to see if there are difference in the mean weight for the four groups.
What is
k
for this experiment?

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Question 17
1 / 1 point
The
F
Statistic from an experiment with
k
= 3 and
n
= 50 is 3.67. At
α
= 0.05, will you reject the null
hypothesis?
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Question 18
1 / 1 point
A sport preference poll yielded the following data for men and women. Use a 5% significance level and test to
determine if sport preference and gender are independent.