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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.
blood type ab is found in only 3 of the population. if 290 people are chosen at random find the probability of the
The mean fare charged for service from the beach to the airport is $18.00 and the standard deviation is $3.50. We select a sample of 15 fares. What must you assume to make the above calculation?
What is the level of agreement between a normative (clinical) assessment and a self-perception of orthodontic treatment need - The descriptive statistics and one regression model.
Surface area of a cube. The formula A = 6V^-2/3(-2/3 power) gives the surface area of a cube in the volume V. What is the volume of a cube with a surface area 12 square feet?
Describe the concepts of disruptions and risks as they apply to transportation. Why are they important from financial and service standpoints?
where X is some set. Construct a branch-and-bound tree that starts with a subproblem where the integer constraints are relaxed, and proceeds with successive restriction of the variables x1,...,xn to the values 0 or 1.
Four percent of the customers of a store buy cigars. Half of the customers who buy cigars buy beer and one fourth of those who buy beer buy cigars. The table is given below:
Suppose that a Santa Clara County kindergartner is selected at random. Are the events selected student is a recent immigrant and selected student has TB independent or dependent events? Justify your answer using the given information.
A large electronics company wants to estimate the proportion of all households that own GPS machines. What sample size is required that would give the maximum error of 2.0% for a 95% confidence interval? An unscientific survey had a result of 30%.
The total profit (in dollars) for sales of x rowing machines is given by P(x) = -0.2x^2 + 300x - 200. What is the profit if 500 are sold? For what value of x will the profit be at a maximum?
sixty percent of college students weigh between 150-210 lb.identify degree of confidence level of confidence
The medical school at a university, if 10 medical students are randomly selected for that school. find the probability that only 4 of them will graduate.
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