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Question: Racehorse. A man buys a racehorse for $20,000 and enters it in two races. He plans to sell the horse afterward, hoping to make a profit. If the horse wins both races, its value will jump to $100,000. If it wins one of the races, it will be worth $50,000. If it loses both races, it will be worth only $10,000. The man believes there'[s a 20% chance that the horse will win the first race and a 30% chance it will win the second one. Assuming that the two races are independent events, find the man's expected profit.
A sample of 50 people found that 32 paid with their own money, 10 paid using insurance, and 8 paid using Medicare. At a = 0.05 is the assumption correct? Use the P-value method. What would be an implication of the results?
Discuss any limitations (inaccurate data; incomplete information; not enough samples for testing)can have an regression analysis.
Tay-Sachs couples. Approximately 1 in 28 people of Ashkenazi Jewish descent are Tay-Sachs carriers. In randomly sampling one man and one woman from this population, what is the probability neither is a Tay-Sachs carrier?
Choose at random one of the random sample averages of 5 rectangles. Calculate the average value for a random sample of 20 rectangles.
7.5 Refer to Table 2.10 on death penalty verdicts. Let D = defendant's race, V = victim's race, and P = death penalty verdict. Table 7.20 shows output for fitting model (DV,DP,PV ). Estimates equal 0 at the second category for any variable.
Suppose that scores on a particular test are normally distributed with a mean of 120 and a standard deviationof 16 . What is the minimum score needed to be in the top 20% of the scores on the test?
a suppose that we wish to test the hypotheses h0 p 0.12 versus ha p lt0.12. if the test statistic is 1.57 find the
What are some challenges that local law enforcement officers face? What do law enforcement officers need to combat computer crimes at the state and local levels?
Below is the number of new cars sold at Sharkey in the last seven months and for the last eight months at Dave White. Do you agree with Mr. Sharkey? Use the .01 significance level."
The following data are available (number of half-gallon containers sold per day): 48, 59, 45, 62, 50, 68, 57, 80, 65, 58, 79, 69. Assuming that this is a random sample of daily demand, give a 90% con?dence interval for average daily demand for mil..
Make a plot of the ratio of the number of boys born per year to the number of girls in the U.S. What do you see? In what year did we see the most total number of births in the U.S.?
Two years ago, a survey of all Wal-Mart customers indicated that the mean number of items bought per day by male customers was 8.3 with a standard deviation of 3.7.
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