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A university has 10,000 students of which 45% are male and 55% are female. If a class of 30 students is chosen at random from the university population, find the mean and variance of the number of male students.
Statistics and Probability, Statistics
Assume that a firm could borrow 100 billion dollars. The most straightforward value from the leveraged recapitalization that people would estimate is the present value of interest tax shield. Assume the cost of debt is 0 ...
Robertson Steel is forecasting the following numbers: EBIT $1,000,000 Interest Expense 300,000 ROE 20% The company is in the 40 percent tax bracket. After putting together the forecast the ...
Suppose you want to calculate the? z-score for your height. How will the? z-scores compare if you use your height in inches verses? centimeters?
Question: In each of the following random experiments, describe the sample space S for the experiment. Then use your intuition and experience to assign a value to the probability p of each of the events A occurring. a. T ...
A puck company wants to sponsor the players with the 20% quickest goals in hockey games. The times of first goals are normally distributed with a mean of 8.54 minutes and a standard deviation of 4.91 minutes. How fast wo ...
Amy currently has $500 in an account with an annual rate of return of 4.3%. She wants to have $3000 for a trip to Florida when she graduates in 2 years. How much will she have to save each month to afford her trip?
Borel wants to be a millionaire when he retires in 40 years. How much does he have to save each month if he can earn a 10% annual return? (round off all answers to 2 decimal places)
A doctor wants to predict the birth weight of a newborn baby (measured in grams) based on the gestational age (measured in weeks) at the time of birth. The doctor uses 11 data points, with births ranging from 29 weeks to ...
1. According to the latest poll, 750 adult respondents believe in global warming. Construct a 95% confidence interval estimate of the proportion of adults who believe in global warming. Round your lower bound and upper b ...
A population has a mean mu equals84 and a standard deviation sigma equals6. Find the mean and standard deviation of a sampling distribution of sample means with sample size n=36.
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