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In given problem, suppose that a 99% confidence interval is required. Compute the new interval, and compare it with the 95% confidence interval you computed in given problem.
Problem A real estate agent needs to estimate the average value of a residential property of a given size in a certain area. The real estate agent believes that the standard deviation of the property values is σ = $5,500.00 and that property values are approximately normally distributed. A random sample of 16 units gives a sample mean of $89,673.12. Give a 95% confidence interval for the average value of all properties of this kind.
a tourist bureau for a western state conducted a study which showed that 65 of the people who seek information about
If a condition of steady state is achieved, calculate the diffusion flux of carbon through the plate if the concentration of carbon at positions of 5 and 10 mm beneath the carburizing surface are 1.2 and 0.8 kg/m3, respectively.
let y1 y2 ... yn be independent random variables such that each yi has an exponential distribution with mean bi. let
The Minneapolis Star Tribune newspaper has decided to write an article about gasoline prices in the Twin Cities area (Minneapolis and St. Paul).
In a market study for Target, a researcher found that 70% of customers are repeat customers. If 14 customers are selected at random, find the probability of getting.
Build a 95% confidence interval for the mean of the population from the given sample data.
Here are the questions: Solve the differential equations by separation of variables.
The data taken for this study came from a survey of two insurance carriers. The first carrier (C1) was compared against the second competitor (C2). In this study, we determine whether there exists any difference between the two insurance carriers.
suzy senior sales analyst hired by the dealership wants to reassess risks. she assumes that a number of cards sold by
question researchers asked a sample of 50 1st grade teachers and a sample of 50 12th grade teachers how much of their
You are required to perform a hydraulic assessment on Newham Creek, a tributary for Bulimba Creek in Brisbane. The provided model includes basic data for surveyed and interpolated cross sections.
If you select a random sample of 100 voters, what is the probability that a candidate will be forecast as the winner when. The true percentage of her vote is 50.1%?
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