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The International Council of Shopping Centers reports that the average teenager spends $39 during a shopping trip to the mall. The promotions director of a local mall has used a variety of strategies to attract area teens to his mall, including live bands and "teenappreciation days" that feature special bargains for this age group.
He believes teen shoppers at his mall respond to his promotional efforts by shopping there more often and spending more when they do. Mall management decides to evaluate the promotions director's success by surveying a simple random sample of 45 local teens and finding out how much they spent on their most recent shopping visit to the mall.
The results are listed in data file XR10056. Use a suitable hypothesis test in examining whether the mean mall shopping expenditure for teens in this area might be higher than for U.S. teens as a whole.
Identify and interpret the p-value for the test. Using the 0.025 level of significance, what conclusion do you reach?
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1. Differentiate the main actions between doing and improving your activities. 2. Determine the overall manner in which variation has affected your activities.
How many variables are there in this study? What are the levels of any variables you identified and what hypothesis test would be used to analyze these data? Justify your answer.
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Hello, can you please help me solve this inequality with absolute values?
Let P(x,y) be x has been to y, where the domain of discourse for x is all students in this class, and the domain of discourse for y is all countries in the world. Express the following propositions in English.
The Aloha Banking Co. is studying ATM use in suburban Honolulu. A sample of 30 ATM's showed they were used the following number of times yesterday.
From her district, consisting of several hundred stores, she selects a random sample of 30 stores. For each store she gathered the following information.
let ri be the event that the ith player in a poker game has a royal flush. show that a royal flush a k q j 10 of one
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What is the probability that: The first randomly selected drinker qualifies? Three sports drink users will have to be interviewed to find the first Gatorade drinker?
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