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Construct the probability for the random variables described in the situation. Draw the corresponding histogram for each probability distribution. A shipment of five computers contain 2 that are slightly defective If a retailer receives three of these computers at random, list the elements of the sample space S using the letters D and N for defective and non defective computer respectively To each sample point assign a value x of the random variable X representing the number of computers purchased by the retailer which are slightly defective
Researchers from the United Kingdom studied the effect of two breathing frequencies on performance times and on several physiological parameters
suppose a life insurance company insures the lives of 1000 men aged 30. if actuarial studies show that the probability
Interpret the results. Is it possible that, for these populations of days, the average number of calls completed between plumber A and plumber B do not differ?
the data represent the number of driving fatalitites for a certain area by age for male and female drivers.
You are the manager of a fast-food restaurant. The business problem is to determine whether the population mean waiting time to place an order has changed
1. one classic application of correlation involves the association between the temperature and the number of times a
A salesperson obtained a systematic sample of size 20 from a list of 500 clients. To do so, he randomly selected a number from 1 of 25, obtaining the number 16. He included in the sample the 16th client on the list and every 25th client thereafter..
What is the mean (round to three decimal places). What is the standard deviation of the probability distribution (round to three decimal places)?
question a random sample of 250 juniors majoring in psychology or communications at a large university is selected.
For a random sample of 10 fifth generation iPod music players, the mean battery life was 9.47 hours with a standard deviation of 2.14 hours.
Write appropriate hypotheses.- Check the necessary assumptions.- Perform the mechanics of the test. What is the P-value?- Explain carefully what the P-value means in this context.
assume that you calculated a 95 confidence interval for the mean newborn length of babies born in the united states to
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