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For many countries tourism is an important source of revenue. Data are collected on the number of foreign visitors to a country (in millions) and total tourism revenue (in billions of dollars) for a sample of 10 countries. The regression equation fit was Tourism ($ bill) = 21.5 + 0.295 Visitors (mill). If we were interested in predicting the tourism revenue for a particular country that had 30 million foreign visitors, what process should be used?
A. We should not use this equation because it is not significant.
B. We should use the standard error.
C. We should construct a confidence interval using this equation.
D. We should construct a prediction interval using this equation.
C. We should use the correlation.
The shoppers are grouped in three age categories, under 30, 30 up to 50 and 50 and over. The data is summarized in the table. Let A be the event that a randomly selected shopper is under 30. Find the probability of A.
Find the probability that the number of shares traded on a randomly selected day falls below 0.6 billion and what percentage of days finds a volume of shares traded of more than 2.5 billion?
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Men the same age have mean height 69 inches with standard deviation 2.7 inches. What is the z-score for a woman who is 6 feet tall?
Only 10% of those who don't study get an A, what is the probability that someone who gets an A actually studied for the test.
When using the distribution of sample means to estimate the population mean, what is the benefit of using larger sample sizes?
Utilize this information to construct a probability table, and then calculate each of the given probabilities:P (female and domestic car).
For each of the following studies, say whether you would use a t test for dependent means or a t test for independent means.
Particular flight involving a jumbo-jet with 261 seats, the airline sells 270 tickets. What is the probability that the airline will not have enough seats for all the ticket holders who show for the flight?
assume there are 18 homes in the quail creek area and 9 of them have a security system. four homes are selected at
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