dolution
dolution.
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dolution.
dolution.
Which of the following is an example of a temporal event?
a) Set alarm
b) Time to renew drive license
c) Deb wants to set a reminder for an appointment
d) all of the above
e) None of the above
Aver ordered a laptop from an online store which offered loyalty points for each purchase made by a customer. After Aver made payment, the store’s online ordering system provided him with a summary of the order, and showed the balance of his loyalty points. Based on the description, which of the following statements is true?
a) “Order product online” is a use case
b) “Order product” includes “Update points balance”
c) “Pay for laptop” is a use case
d) All of the above
dolution.
Defensive Driving An investigator for the state police wants to determine the effectiveness of three different defensive driving training programs to see if there are gender differences. Five subjects of each gender who recently received speeding tickets are assigned to each program. At the end of the program, each is given a written test on his or her knowledge of defensive driving. The scores (out of 100) are given next.
(a) The scores are approximately normally distributed. Verify the requirement of equal population variances.
(b) Determine whether there is significant interaction between program and gender. (c) If there is no significant interaction, determine whether there is significant difference in the means for the three programs.
(d) Draw an interaction plot of the data to support the results of parts (b) and (c).
(e) If there is significant difference in the means for the three programs, use Tukey’s test to determine which pairwise means differ using a familywise error rate of
dolution.
Concrete Strength Researchers Olivia Carrillo-Gamboa and Richard Gunst presented the following data in their article, “Measurement-Error-Model Collinearities.” The data represent the compressive strength (in pounds per square inch) of a random sample of concrete 2 days, 7 days, and 28 days after pouring.
(a) Normal probability plots for each treatment indicate that the requirement of normality is satisfied. Verify that the requirement of equal population variances for each treatment is satisfied.
(b) Is there sufficient evidence that the mean strength is different among the three days at the Ă‚Â level of significance?
(c) If the null hypothesis from part (b) was rejected, use Tukey’s test to determine which pairwise means differ using a familywise error rate of .
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