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Suppose a life insurance company sells a 27-year old woman a $10,000 one-year life insurance policy for $300. If the probability that she dies in the coming year is 0.001, what is the expected gain for the insurance company?
The following data show samples of three chain stores in three different locations in one town and the amount of dollars spent per customer per visit. At the 0.05 level, is there a difference among the means?
Simplify the principal square root of 64 z^4. Assume that z represents a positive real number.
The owner of a fish market has an assistant who has determined that the weights of catfish are normally distributed, with mean of 3.2 pounds and standard deviation of 0.8 pound. What percentage of samples of 4 fish will have sample means between 3..
sketch a histogram showing the population distribution - locate value of the population mean in your sketch and make an estimate of the standard deviation.
Test whether the gender distribution for basketball fans is significant different from general college by proportion test.
A newspaper conducted a statewide survey concerning a proposal to raise taxes to prevent budget cuts to education. The newspaper took a random sample (assume it is an SRS) of 1200 registered voters and found that 580 would vote to raise taxes. Let..
The amount of Jen's monthly phone bill is normally distributed with a mean of $50 and a standard deviation of $10. Find the 25th percentile.
A sample of 20 cables is selected and tested. Find the sample mean that will cut off the upper 95% of all samples of size 20 taken from the population.
Following data represent random sample of bank balances for population of checking account customers at large eastern bank. Based on data, determine the 95 percent confidence interval estimate for true population mean?
Explain the assignment model and how it is similar to a transportation problem. Give a real-world example of an assignment model to describe what is transported where.
Provide an example of a situation in which factor analysis, cluster analysis, and multidimensional analysis might be used.
Determine the standard score for the value x=452 realative to its sample, where the sample mean is 500 and the standard deviation is 32.
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