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Sports and Leisure In 2012-2013, Carnival Cruise Lines experienced onboard problems with four ships: Triumph, Elation, Dream, and Legend. The technical issues included loss of power, steering problems, and even a fire in an engine room. Despite these setbacks, the cruise industry contributes almost $38 billion to the U.S. economy, and approximately 20% of all people in the United States have taken a cruise.46 Suppose 25 people from the United States are selected at random.
a. Find the probability that exactly three people have been on a cruise.
b. Find the probability that at most two people have been on a cruise.
c. Suppose seven people have taken a cruise. Is there any evidence to suggest that the percentage of people who have taken a cruise has increased? Justify your answer.
Smoking 2004. National data in the 1960s showed that about 44% of the adult population had never smoked cigarettes. In 2004 a national health survey.
a gallup poll released in december 2010 asked 1019 adults living in the continental us about their belief in the origin
Suppose that y is a random variable having a normal distribution with a mean equal to 250 and standard deviation equal to 10.
What is the amount by which we will be off on average when predicting values for the dependent variable using the regression model?
Batteries. In a group of 10 batteries, 3 are dead. You choose 2 batteries at random.
What is the average rating for all CBC movies and How about ABN movies and BBS movies - What is your recommendation to the executives? Justify your answer referring to the relevant figures.
At the .10 level of significance, is the coin biased toward heads? Show your decision rule and calculations.
A Wendy's manager performed a study to determine a probability distribution for the number of people, X, waiting in line during lunch. The results were as follows: (a) Verify that this is a discrete probability distribution. (b) Compute and interpr..
The population standard deviation has been estimated as being 40 grams. In order to have 99% confidence that the sampling error in estimating μ is no more than 5 grams, what sample size will be necessary?
(a) State the null and alternative hypothesis (b) Give test statistic and p-value (c) Do these data provide evidence that metal tagged penguins have a later mean arrival time, yes or no?
Employees of MNM Corporation are about to undergo a retraining program. Management is trying to determine which of three programs is the best.
A town has 15 neighborhoods. If you interviewed everyone living in one particular neighborhood, would you be interviewing a population or a sample.
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