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One state lottery has 300 prizes of $1, 65 prizes of $10, 18 prizes of $75, 6 prizes of $325, 2 prizes of $1000, and 1 prize of $2000. Assume that 32,000 lottery tickets are issued and sold for $1.
1. What is the lottery's expected profit per ticket?
2. What is the lottery's standard deviation of profit per ticket?
3.What is the lottery's expected contribution to state schools per ticket given the equation: contribution per ticket= 4/11 (profit per ticket)-(1/23)
The diameters of oranges in a certain orchard are normally distributed with a mean of 5.26 inches and a standard deviation of 0.50 inches.
In a normal frequency distribution, 32% of the cases:
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The mean number of passengers per cruise is 1,820 and the standard deviation is 120.
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Calculate the 90% confidence interval about μ if sample size, n, is 55. How does increasing sample size affect margin of error, E?
Assuming that the variability is unchanged (i.e., σ = 6), is there sufficient evidence to suggest that the strength of the product has increased at the 1% level of significance?
Does the data set represent a sample or a population? If it is a sample, describe the population from which it has been drawn.
(a) Find the median cost of houses at Coal City in 1988. (b) Find the modal selling price of houses at Coal City in 1988.
A research company has designed three different systems to clean up oil spills. The following table contains the results, measured by how much surface area (in square meters) is cleared in 1 hour. The data were found by testing each method in seve..
When modelling E(y) with single qualitative independent variable, number of 0 - 1 dummy variables in model is equal to number of levels of qualitative variable.
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