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The average stock price for companies making up the S&P 500 is $40, and the standard deviation is $10. Assume the stock prices are normally distributed. What is the probability a company will have a stock price less than $33.
One state lottery has 1000 prizes of $1, 200 prizes of $5, 50 prizes of $25, 15 prizes of $150, 4 prizes of $500, and 1 prize of $2500. What is the lottery expected profit per ticket?
Based on this sample information, develop a 90 percent confidence interval for the population mean yearly premium.
According to the regional bar assoc., 60% of people who take the bar exam pass. Find the approximate probability that at least 61% of 200 randomly selected people taking the bar will pass. Round to three decimal places as needed.
Formulate the hypotheses to determine whether or not the lathe is in perfect adjustment.
Using a level of significance of .05, is there evidence that the dual degree students are receiving lower grades? Explain.
What is the probability that the mean life-span of a sample of 64 randomly selected bulbs will exceed 727 hours?
What is your decision regarding the null hypothesis and interpret.
A manufacturer of 35-mm cameras knows that a shipment of 30 cameras sent to the large discount store contains 8 defective cameras. The manufacturer also knows that the store will choose two of the cameras at a random, test them, and accept the shi..
A survey is being planned to determine the mean amount of time corporation executives watch television. A pilot survey indicated that the mean time per week is 20 hours, with a standard deviation of 5.5 hours
What would be your best point estimate for average Sales in weeks for which Newspaper advertising were $1 million? What would be an appropriate interval estimate for this?
In a column, write the sample space for the experiment that consists of observing the day's production.
By using the age midpoints x and the percentages of nurses, do we have a valid probability distribution? Describe.
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