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The total claim amount for a health insurance policy follows a distribution with density function f(x) = (1/1000)e^(-x/1000) for x > 0. The premium for the policy is set at 100 over the expected total claim amount. If 100 policies are solds, what is the approximate probability that the insurance company will have claims exceeding the premiums collected?
A random sample of 30 students was selected, and the following values were recorded: Is this sample significantly different than the population? State the null and alternative hypotheses.
First- and second-place trophies are awarded to the two persons receiving the highest and second-highest number of votes. In how many different ways can the trophies be awarded?
A bank has the following data on the gender and marital status of 200 customers.What is the probability of finding a single female customer? Is marital status independent of gender? Explain using probabilities.
Do any of the selected samples seem to be out of the control limits? Describe.
Assume that the population is normally distributed. Can we conclude, at the level of significance, that the mean lifetime of light bulbs made by this manufacturer differs from months?
How large a sample is required if the 97 percent level of confidence is used and the estimate is to be within $2,500? The standard deviation is $16,000.
a. Determine the sample proportion, p, of households with cellular telephones that can be used to access the Internet. b. If the population proportion is 0.40, determine the standard error of the proportion.
find probabilty that the average of those counts is more than 83.0 mosquitoes per square meter. Assume the variable is normally distributed.
Profitability at a bank is declining as customers are shifting to other banks. As a researcher, identify the problem (root cause of the symptom) through a scientifically crafted research proposal.
The director of admissions at Kinzua University in Nova Scotia estimated the distribution of student admissions for the fall semester on the basis of past experience.
what is the final conclusion obtained when testing the claim that p gt 0.25 given that the p-value is 0.5555?p lt
Using a simulation of 25 random numbers. Find average profits for order quantities of interest. Investigate in intervals of 500.
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