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Imagine a class with 40 students. The teacher had only ten free tickets for the Art Museum for this class. Therefore, the teacher decided to use a lottery to decide who would receive the free tickets. Alex and Lily wanted to go to the concert together. What's the probability that both of them win the free tickets?
What is the probability of winning a low, even, red, black, odd, or high bet in the game of American roulette? What is the probability of winning a bet placed on any one particular number, e.g., 33? Notice that under American roulette, there are s..
Compute a 95% confidence level for the difference in the means of the two treatment methods and select the best answer below. Assume that the independent random samples were taken from normal distribution.
Jim is applying to Big Rock Insurance Company for his term insurance policy. What is the probability that Jim will die in his 60th year? (Round your answer to five decimal places.)
A humane society claimes that less than 36% of U.S. households own a dog. In a random sample of 396 U.S. households, 151 say they own a dog. At x=0.04, is there enough evidence to support the society's claim?
Regression and Correlation are two of the most often used and abused tools in research. People are quick to jump to conclusions that if a relationship exists between two variables, then one must cause (causation) the other.
A score of on the college entrance exam. Assuming that average refers to the mean, which of the following claims must be true based on this information?
Which of the following is a correct statement about a probability? A. It may range from 0 to 1. B. It may assume negative values. 1. Which of the following is a correct statement about a probability?
Find the midrange for the following group of data items: what is the midrange rounded to the nearest tenth?
A random sample of 72 statistics students was taken to estimate the proportion of students who are also in the Math Club. The 90% confidence interval was 0.438 to 0.642. Using this information, what sample size would be necessary to estimate the t..
In 2005, the mean number of wins for MLB teams was 81.00, with a standard deviation of 10.83. The perennial underdogs, the Chicago Cubs, had a z score of 0.18.
Island Water Sports is a business that provides rental equipment and instruction for a variety of water sports in a resort town. On one particular morning, a decision must be made of how many Wildlife Raft Trips and how many Group Sailing Lessons ..
What price should be charged for each type of dinner now, and what is the maximum weekly profit?
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