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An auditor for Health Maintenance Services of Georgia reports 40% of policyholders 55 years or older submit a claim during the year. Fifteen policyholders are randomly selected for company records.
a. How many policyholders would you expect to have filed a claim within the last year?
b. What is the probability that 10 of the selected policyholders submitted a claim last year.
c. What is the probability that 10 or more of the selected policyholders submitted a claim last year.
d. What is the probability that more then 10 of the selected policyholders submitted a claim last year.
The law of large numbers tells us what happens in the long run. Like many games of chance, the numbers racket has outcomes so variable-one three digit number wins $600 and all others win nothing-that gamblers never reach "the long run".
A set of 50 data values has a mean of 15 and a variance of 25. Find the standard score of a data value = 30.
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Give the 90% confidence interval for the mean score in the population of all young women.
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The strength of the linear relationship between two numerical variables may be measured by the
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A confidence interval for the population mean tells us which values of mean are plausible (those inside the interval) and which values are not plausible (those outside the interval) at the chosen level of confidence.
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Use MegaStat's output for simple linear regression to determine the regression equation
A Myrtle Beach resort hotel has 120 rooms. In the spring months, hotel room occupancy is approximately 75%. What is the probability that at least half of the rooms are occupied on a given day?
Compute standard error of mean? Compute the margin of error, with 95% confidence.
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