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Each year, an insurance company reviews its claim experience in order to set future rates. Regarding their damage-only automobile insurance policies, at least one claim was made on 2073 of the 12,299 policies in effect for the year. Treating these data as a random sample for the population of all possible damage-only policies that could be issued, find a 95% confidence interval for the proportion of at least one claim.
Want a sample size of about 60 (30 controls and 30 cases). At 5% significance and 80% power.How do i determine the standard deviation and mean difference.And how do i arrive at the 60? my study design is case-control.
A university's administrator proposes to do an analysis of the proportion of graduates who have not fuond employment in their major field one year after graduation
Bottling Company Case Study
Bill Russ, the production manager at Ross Co., maintains detailed records on number of times each machine breaks down and requires service all through the week. Bill records show that the Puret grinder has required repair service according to the ..
What is probability that all parts in the sample are defective, what is probability that the sample will containe 3 defective parts of more.
ATM center in Mumbai is random with an average rate of 1.3 customer per min. Assume the arrival follows a Poisson distribution, calculate the probability that: Not a single customer arrived in a minute.
Utilize a test of the difference among proportions when answering these questions. Illustrate the research hypothesis.
The manufacturer of a coffee dispensing machine claims the ounces per cup is normally distributed with population mean equal to 8 ounces and standard deviation equal to 0.9 ounces. If 50 cups of coffee were measured, what is the possibility that- ..
What is the probability that she will have at least 3 minutes to obtain her cup of tea?
Marketing firm asked the random set of married and single men as to how much they were eager to spend for vacation. At alpha= .05, is a difference in two amounts?
A synopsis of a business related problem where statistics was used to solve the problem. The synopsis needs to include a discussion of the specific problem, the research methodology used, the quantitative and qualitative tools used
the u.s. energy department states that 60 of all u.s. households have ceiling fans. in addition 29 of all u.s.
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