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The average number of punds of meat that a erson consumes a year is 214.7 pounds. Assume that the standard deciation is 20 pounds and the distribution is approximately normal. Find the probability, rounded t four decimal places, that a person selected at random consumes less than 220 pound per year.
Determine the probability that none of the calculators will be defective?
Create and attach a normal curve to this document with the following elements: the normal curve, a label of the average number of shoppers, and labels for the sample means of 441 and 446 shoppers. Include all the appropriate symbols.
Let X be a normal distributed random Variable with u=100 and o=10. the probability that X is between 70 and 100 is:
She then uses the mean and standard deviation of these values to estimate the mean value for all parts the operator is making. Construct a 95% confidence interval for the mean value assuming a normal distribution.
He measured whether their answers to a standard set of mental problems were affected. His approach to manipulating his independent variable involved
Find the first order statistics at time instance 3. Find the probability at time instance k,the person is at the location m steps to the right of the origin.
Stock increasing in price has no effect on the prices of other stocks. Assuming you are risk-averse and you could choose one of the two economies in which to invest, which one would you choose? Explain.
Find the expected GPA when SAT = 800. Find E (GPA|SAT = 1,400). Comment on the difference.
The number of senior citizens (65 and older) in the US in millions n years after 1990 can be estimated using the formula
Forty percent of the time, sales are more than 470,000 and 10 percent of the time, sales are more than 500,000. What is the mean and standard deviation of the distribution?
Use exponential smoothing to forcast Aug. income. Assume that the initial forecast for Feb. is $65,000. The smoothing constant selected is x=0.1
Suppose that a random sample of 51 passengers showed an average total weight of 200 pounds with a sample standard deviation of 59.5 pounds. What is the value of the test statistic?
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