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What is the probability that a random point selected in the interval [0,4] will be an integer?
What is the probability that a rancom point selected in the interval [0,4] will be an irrational number?
a construction company figures the cost of a project based on an average idle time of 68 minutes per worker per 8 hour
suppose that x1 x2 x3 x4 and x5 is a random sample from a distribution with density function fx1theta for 0ltxlttheta.
If Belson Electronics's new converter produces less than the 110 volts of their old product, they must redesign it. A sample of 303 converters generated a mean of 107.2 volts, with a standard deviation of 47.3 volts. Set Alpha at 5 percent.
An electrical firm manufactures electric light bulbs that have a length of life which is normally distributed with mean and standard deviation equal to 500 and 50 hours, respectively.
If the process mean remains at 12.05 oz, what must the standard deviation be so that 99% of the cans will contain 12 oz or more?
SAT verbal scores are normally distributed with a mean of 494 and a standard deviation of 97. Use the Empirical Rule to determine what percent of the scores lie between 300 and 591.
a sample of 400 racing cars showed that 80 of them cost over 700000. what is the 99 confidence interval for the true
The average hourly wage last year for members of the hospital clerical staff in a large city was $6.32. The standard deviation of the population was $.54. This year a sample of 50 workers had an average hourly wage of $6.51. Test the claim at alph..
Can the five-year rate of return be estimated based on the assets of the Fund? Determine the regression equation. Use assets as the independent variable.
Management at the Kansas City Corporate office for tax prepration wants to accomplish a business objective by conduting a study of the waiting time in its tax offices in different states.
BMI in children is approximately normally distributed with a mean of 24.5 and a standard deviation of 6.2. A BMI between 25 and 30 is considered overweight. What proportions of children are overweight?
at a small college the probability that a student takes physics and sociology is 0.092. the probability that a student
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