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A state lottery pays $10,000 to anyone whose lottery ticket has a winning five digit lottery number. Any number from 00000 to 99999 is a possible winner and each ticket costs $1. What is the expected value of purchasing a ticket in this lottery? How much net revenue does the state expect, on average from each ticket? What is the risk preference of people who play this lottery?
Based on the custom "rule-of-thumb" for estimating the standard deviation, if the range of prices for a product sold in Kansas City is between $99 and $349, an estimate of the standard deviation of the prices would be about:
Would you play this game if you wanted to make money? What do we expert the value of the results of the game to be?
State the null and the alternative hypotheses. Using the p-value approach, test to determine whether or not the mean age of all employees is significantly more than 40 years.
Which of the following models satisfies the rules of probability and The event corresponding to the above system functioning properly during one period of operation is
The average amount of insulation in the sample of household is 12 inches. The sample standard deviation is 15 inches. Set up and interpret a 95% confidence interval.
Write Cumulative distribution function.Find the cumulative distribution function F(x).
Suppose we have randomly and independently sampled 25 women and asked each whether she has been a victim of domestic abuse at some point in her life. Find the probability that more than 22 of the women sampled have not been the victim of domestic ..
A firm engaged in manufacturing undergarments for gents employs 100 male and 144 female workers. The average production per day of a male worker is 60 items with a variance of 15 items, and that of a female workers is 65 items with a variance of 1..
If we know that the length of time it takes a college student to find out a parking spot in library parking lot follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute
Can we conclude that car size is dependent on marital status? YES or NO (circle one)
Discuss some of the common uses of IQ tests. Do you think that IQ test should be used for these purpose? Does the Flynn effect alter your thoughts about the uses of IQ test? Explain.
What is the probability that a simple random sample of 40 male graduates will provide a sample mean within $10,000 of the population mean, $168,000 (to 4 decimals)?
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