Reference no: EM13111450
To measure the effect of a storewide sales campaign on non-sale items, the research director took a random sample of 13 pairs of stores that were matched according to average weekly sales volume. One store of each pair (the experimental group) was exposed to the sales campaign, and the other member of the pair (the control) group was not. The following data indicated sales for the stores over a one week period: (in $1,000s)
Store # With Marketing Campaign Without Marketing Campaign
1 67.2 65.3
2 59.4 54.7
3 80.1 81.3
4 47.6 39.8
5 97.8 92.5
6 38.4 37.9
7 57.3 52.4
8 75.2 69.9
9 94.7 89.0
10 64.3 58.4
11 31.7 33.0
12 49.3 41.7
13 54.0 53.6
Does the sample data provide evidence to conclude that the average sales of non-sale items in the stores receiving campaign is greater than the average sales of non-sale itmes in the stores not receiving the campaign? Use theta=.05
a. Which of the t-test methods are you going to use and why?
b. Formulate the null and alternative hypothesis
c. Determine the criterion for rejection or nonrejection of the null
d. What is the t-statistic for this analysis
e. Compare the test statistic to the rejection region and make a judgment about the null and alternative hypothesis.
f. Interpret the statistical decision in terms of the problem
g. What is the observed p value in this hypothesis test? What does it mean?
|
List at least one advantage of international trade
: Counselling the President of Romania making recommendations for international trade. Address the following- o List at least one advantage as well as one limitation of international trade you encountered in the simulation.
|
|
Hypothesis test parameter
: Microsoft Excel was used on a set of data involving the number of parasites found on 46 Monarch butterflies captured in Pismo Beach State Park.
|
|
Rejection region for a hypothesis test
: The owner of a local night club has recently surveyed a random sample of n=250 customers of the club. She would now like to determine whether or not the mean age of her customers is over 30.
|
|
Explain work in project groups
: A local public relations firm that arrogances itself on customer satisfaction has been experiencing several employee-related problems. Workers in this company work in project groups consisting of three to seven people
|
|
Criterion for rejection or nonrejection of null
: Which of the t-test methods are you going to use and why? Formulate the null and alternative hypothesis. Determine the criterion for rejection or nonrejection of the null. What is the t-statistic for this analysis
|
|
Explain marketing strategy for a new software product
: Courtney a sales manager and her team of six have been assigned the task of developing a marketing strategy for a new software product developed by her company
|
|
Determine the percent of working and idle time
: A bank manager wants to determine the percent of time that tellers are working and idle. She decides to use work sampling, and her initial estimate is that the tellers are idle 30 percent of the time.
|
|
Describe model of organizational change implementation
: At her last job she attained expertise in that company's model of organizational change implementation.
|
|
What will be the deadweight loss
: The government dislikes smoking, and likes tax revenue. If they wanted to increase the after-tax price to $10 per pack, what size of excise tax must be placed on sellers? How much revenue will it raise? What will be the Deadweight Loss?
|