Reference no: EM131423773
Revisiting drive-thru speaker clarity. In Exercise, you compared men's satisfaction with drive-thru speaker clarity with that of women using the two-sample t procedures that do not assume equal standard deviations. Compare the means using a significance test and find the 95% confidence interval for the difference using the pooled methods. How do the results compare with those you obtained in given Exercise?
Exercise
Drive-thru speaker clarity. QSRMagazine.com surveyed 689 adults on their drive-thru window experiences at quick-service restaurants.24 One question was "Thinking about your most recent drive-thru experience, please rate how satisfied you were with the clarity of communication through the speaker." Responses ranged from "Very Dissatisfied (1)" to "Very Satisfied (5)." The following table breaks down the responses according to gender:
|
|
Ratings
|
|
Gender
|
1
|
2
|
3
|
4
|
5
|
|
Female
|
5
|
44
|
48
|
183
|
188
|
|
Male
|
5
|
29
|
30
|
91
|
66
|
(a) Report the means and standard deviations of the rating for the male and female participants separately.
(b) Comment on the appropriateness of t procedures for these data.
(c) Test whether males and females are, on average, equally satisfied with speaker clarity. Use a two-sided alternative hypothesis and a significance level of 5%.
(d) Construct a 95% confidence interval for the difference in average satisfaction.
(e) Given the coarseness of the rating, the owner of the Sir Beef-a-lot chain considers only a difference in the means of at least 0.25 units as meaningful. Based on your results in parts (c) and (d), what would you tell this owner?
|
Prepare an employee compensation and benefits package
: Choose the type of organization for which you are designing the package. Develop an employee compensation and benefits package for this new position.
|
|
Exchange rate between the us dollar and the euro
: Suppose that a Toyota Camry costs $25,000 in the U.S. and €20,000 in Europe, while the nominal dollar-euro exchange rate is 0.9€/$. a. Describe how an arbitrageur could profit from this situation (What would they buy? What would they sell?
|
|
Describe a real modern situation where similar issues arise
: Explain whether you prefer the representation of the Last Supper by Tintoretto, Veronese, or Leonardo da Vinci, identifying specific elements of the Mannerist and Renaissance artistic styles. Discuss whether you would have sided with Veronese or w..
|
|
Explain where you would likely find that information
: Identify any additional information you would need to recommend a solution, and explain where you would likely find that information
|
|
Comment on appropriateness of t procedures for data
: Given the coarseness of the rating, the owner of the Sir Beef-a-lot chain considers only a difference in the means of at least 0.25 units as meaningful. Based on your results in parts (c) and (d), what would you tell this owner?
|
|
Calculate the reliability of the unit for a 150-hour mission
: Field data have indicated that Unit A has a failure rate of 0.0004 failure per hour. Calculate the reliability of the unit for a 150-hour mission.
|
|
Explore role capitalism plays in corporate decision making
: Explain the role capitalism plays in corporate decision making. Discuss if you believe it is possible for a company to cater to both its best interest and that of the consumer conjointly or if one always has to prevail.
|
|
Determine the overall network reliability
: In Figure 3.39, the component reliabilities are A = 0.95, B = 0.97, C = 0.92, D = 0.94, E = 0.90, and F = 0:88. Determine the overall network reliability.
|
|
Describe what munger means by mental models
: In your own words, describe what Munger means by mental models. Examine how Munger's concept of mental models has changed your ideas of decision making in investment management and business.
|