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The Population mean is 75. A random sample of 48 items is selected from the population. What is the probability that the mean of the sample is less than 64? (assume standard deviation of 9)
Statistics and Probability, Statistics
Ages of CEOs of companies throughout the United States, and answer the questions that follow. Event A : CEO is under 40 Event B : CEO is at least 30 Event C : CEO is in his or her 50s Event D : CEO is under 60 1. Even ...
A representative from your company visited a prison and sampled 500 prisoners in Kailil , concluding that 90 of them are political prisoners. the Test hypothesis, at the 5% significance level, that one third of the priso ...
According to bottledwater.org, per capita consumption of bottled water in the U.S. in 2012 was reported to be 30.8 gallons. Assume that the amount of bottled water consumed per person is Normally distributed with mean 30 ...
A set of score has a mean of μ = 63 and a standard deviation of σ = 8. If these scores are standardized so that the new distribution has μ = 50 and σ = 10, what new value would be obtained for a score of X = 59 from the ...
The population standard deviation for the height of high school basketball players is 2.3 inches. If we want to be 95% confident that the sample mean height is within 0.5 inch of the true population mean height, how many ...
Answer as thourough as possible. Consider an airline whose bottom line is sensitive to volatile jet fuel prices. To reduce the volatility, management decides to use derivatives to hedge the cost of jet fuel. The risk man ...
The weights of ice cream cartons are normally distributed with a mean weight of 20 ounces and a standard deviation of 0.5 ounces. You randomly select 25 cartons. What is the probability that their mean weight is greater ...
A company recently had 26 million shares outstanding trading at $45/share. The company announces its intention to raise $290M by selling new shares. What percentage of the value of the company's existing equity prior to ...
You are promised $80 a year for the next 4 years. You are also promised a one-time payment of $2000 in 6 years. The interest rate is 6%. What is the total PV?
In February 2017 the risk-free rate was 4.31 percent, the market risk premium was 6 percent, and the beta for Twitter stock was 1.58. What is the expected return that was consistent with the systematic risk associated wi ...
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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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