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A prison official wants to estimate the proportion of cases of recidivism. In examining 250 convicts there are 65 cases. with 99% confidence interval what is the range? How do you figure this type of problem?
If a fair six-sided die is rolled 1200 times, find the probability that an even number will occur at most 620 times.
A new president at Big State University has made student satisfaction with the enrollment and registrations process one of her highest priorities.
Assume that the same sample mean was obtained from a sample of 120 items. Provide a 95% confidence interval for the population mean (to 2 decimals).
Sample data in a goodness-of-fit test are compared with __________. A. a predetermined or historical standard for the variable being studied
What is the probability that the number of granite selected for analysis is within 1 standard deviation of it means value.
The length of time for one individual to be served at a cafeteria is a random variable having a lognormal distribution with a mean of 10 minutes and standard deviation of 2 minutes.
Construct a 99% confident interval for the standard deviation of the amount of vitamin B6 per pill.
Given the following data on the number of pints of ice cream sod at a local ice cream store for a 6 period time frame.
Brakes for a model of automobile fail with a Poisson distribution at an annual rate of 4.4/yr. What is the probability that
Must the company replace old truck? If so which of new trunks must they use? Describe in detail.
By constructing null and alternative hypotheses, computing critical values, and comparing test statistic to critical value.
What is the total expected annual inventory cost at the optimal order quantity? What is the re-order point?
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