The number of people arriving for treatment at an emergency room can be modeled by a Poisson process with a mean of 7 people per hour. How many people do you expect to arrive during a 55-minute period?
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Jennifer's broker has shown her two options in the securities market for investment. Security one is a bond of par value of $1,000. The bond has a coupon interest rate of 11% paid annually maturing in seven years, with y ...
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Suppose a sampling space has things a, b, and c. Twice draw from the sample space and replace. The possible sequence formed are {aa,ab,ac,ba,bb,bc,cacb,cc}. Now suppose there are Y different things. There are Y ways the ...
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A local postal carrier distributes first-class letters, advertisements, and magazines. For a certain day, she distributed the following number for each type of item. Delivered to First Class Letters Ads Magazines Home ...
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The average starting salary for graduates at a university is $33,000 with a standard deviation of $2,000. If a histogram of the data shows that it takes on a mound shape, the empirical rule says that approximately 68% of ...
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A log yard uses 3 digit numbers to identify their current stock: a) How many 3 digit numbers can be formed from the digits 0, 1, 2, 3, 4 and 5 if each digit can be used only once and the number cannot begin with 0? b) Wh ...
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You have just received a windfall from an investment you made in a? friend's business. She will be paying you$37,748 at the end of this? year, $75,496 at the end of next? year, and $113,244 at the end of the year after t ...
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Why does a high standard deviation of a stock's rate of return mean that that stock is risky? Explain. (Hint: Intuitively explain how we calculate standard deviation and what does it mean)
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Dude, you ran that red light! When conducting research on colorblindness in males, a research forms random groups of five males in each group. The random variable, x, is the number of males in the group who have a form o ...
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A researcher records the following number of birdcalls made during an experimental session with robins: 8.4 0.9 (M SD). Assuming these data are normally distributed, what is the probability that robins made more than 11 ...
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