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In a raffle, 1,000 tickets are sold for $2 each. One ticket will be randomly selected and the winner will receive a laptop computer valued at $1200. What is the expected value if a person buys one ticket?
Statistics and Probability, Statistics
A firm that produces light bulbs claims that their lightbulbs last 1500 hours, on average. You wonder if the average might differ from the 1500 hours that the firm claims. To explore this possibility you take a random sa ...
A random sample of 86 eighth grade? students' scores on a national mathematics assessment test has a mean score of 292. This test result prompts a state school administrator to declare that the mean score for the? state' ...
Ganad and Equity Risk Premiums. Maria? Gonzalez, Ganado's Chief Financial? Officer, estimates the? risk-free rate to be 3.70 %, the? company's credit risk premium is 4.00%, the domestic beta is estimated at 0.93?, the i ...
Tossing a fair coin three times, what's the probability that at least one head will occur?
Suppose that a fair, 6 sided die is rolled. Let X indicate the event that an odd number is rolled (in other words, X = 1 if an odd number is rolled and X = 0 otherwise). Let Y indicate the event that 2, 3, or 4 is rolled ...
Question 1 (CO6) From a random sample of 68 businesses, it is found that the mean time that employees spend on personal issues each week is 4.9 hours with a standard deviation of 0.35 hours. What is the 95% confidence in ...
The mean of a population of raw scores is 50 (ox=18). What is the probability of randomly selecting a sample of 40 score having a mean above 46?
A company recently had 26 million shares outstanding trading at $45/share. The company announces its intention to raise $290M by selling new shares. Studies show losses are 30%of the size of the new issue, so how large a ...
Let random variable x represent the number of heads when a fair coin is tossed two times. (a) Construct a table describing the probability distribution. x P(x) 0 1 2 (b) Determine the mean and standard deviation o ...
A sample of 100 randomly selected students found that the proportion of students planning to travel home for Thanksgiving is 0.68. What is the Standard Deviation of the sampling distribution?
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Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate
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