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7.) In the gambling game chuck-a-luck, for a $1 bet, it is possible to win $1, $2, or $3 with respective probabilities of 75/216, 15/216, and 1/216. One dollar is lost with a probability of 125/216. Let X equal the winnings for this game.a.) Find E(X). (Note that when a bet is won, the $1 that was bet is returned to the bettor in addition to the $1, $2, or $3 that is won, but the returned dollar does not count as part of the winnings.)
The Bureau of the Census reports that the average commuting time for citizens of both Baltimore, Maryland, and Miami, Florida is approximately 29 minutes (uMiami=29 and uBaltimore=29 minutes).
Using the finite population correction factor, compute the standard error for each of the three firms given a sample of size 50.
State the null and alternate hypotheses if you want to determine whether the mean amount spent is higher for men than for women,
An investment project is expected to earn $100,000 on average with a standard deviation of $50,000. Assume earnings from this investment project is a normal distribution. Of the next 15 people that invest in this project, what is the probability t..
Give a work example and perform a hypothetical 2 population hypothesis test. Create a scenario and do a hypothesis testing example for ANOVA. Give the result and explain what it means.
In a one factor ANOVA, there are 3 independent samples, with n1 = 10, n2 = 12 and n3 = 9. The calculated F-statistic is F = 3.31. At the 0.025 level of significance:Use the tables in the text to determine the critical value of the test.
An economist found that a random sample of 42 high school teachers had an average annual salary of $56,490. A previous study showed that the population standard deviation is $4150. Find the 99% confidence interval for µ, the average annual salary ..
A university found that 20 percent of its students withdraw without completing the introductory statistics. Assume that 20 students registered for the course.
A sociologist claims that the success of students in college (measured by their GPA) is related to their family's income. For a sample of 20 students, the coefficient of correlation is 0.40. Using the 0.01 significance level
Is there enough evidence to support the consumers conjecture at a=0.05. First, indentify the alternative and the null hypotheses.
Determine the probability that none of the 20 disjoint intervals Ij will contain more than one of the random variables X1...X12.
The average price of a sample of 12 bottles of diet salad dressing taken from different stores is $1.43. The standard deviation is $0.09. The average price of a sample of 16 low-calorie frozen desserts is $1.03.
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