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Question: The recent boom in sales of travel books has led to the marketing of other travelrelated guides, such as video travel guides and audio walking-tour tapes. Waldenbooks has been studying the market for these travel guides. In one market test, a random sample of 25 potential travelers was asked to rate audiotapes of a certain destination, and another random sample of 20 potential travelers was asked to rate videotapes of the same destination. Both ratings were on a scale of 0 to 100 and measured the potential travelers' satisfaction with the travel guide they tested and the degree of possible purchase intent (with 100 the highest). The mean score for the audio group was 87, and their standard deviation was 12. The mean score for the video group was 64, and their standard deviation was 23. Do these data present evidence that one form of travel guide is better than the other? Advise Waldenbooks on a possible marketing decision to be made.
Standard deviation of the population is 9 hours. Give the null and alternative hypotheses. Compute the test and p-value. Use a=0.01 to make your conclusion based on the p-value.
25% of the residents garden. If 5% of the residents play poker and garden, find the probability that a resident plays poker, given that they also garden.
Almost everyone says that their personal probability is lower than the random driver probability. Why do you think this is true?
Solve problem graphically1. Describe optimal solution and objective function value in context of the problem.
How much can a dollar buy? The buying power of a dollar changes over time. The Bureau of Labor Statistics measures the cost of a "market basket" of goods.
Suppose that we doubt this claim and we carry out a hypothesis test to see if we can refute the claim. State the null hypothesis H0 and the alternative hypothesis H1 that we would use for this test.
students in jane smiths math class took the scholastic aptitude test. five of the students were randomly selected.
you just saw an ad on television that states the majority of the population would vote to make smoking illegal. the
A jar contains twenty marbles, eight red, eight blue and four green. The probability of drawing a blue marble is twice that of drawing a green.
Men's health, again. Given the table of probabilities from Exercise, are high blood pressure and high cholesterol independent? Explain.
At the bottom of each model write the role that each variable plays in the model (i.e. dependent variable (DV), independent variable (IV), moderator, and mediator).
On average, 12.5 rooms stay vacant per day at a large hotel in a city. Find the probability that on a given day exactly 3 rooms will be vacant.
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