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1. A previous survey showed that 83% of the people who take the daily newspaper read the sports section. What sample size is needed to be 90% confident that the true
proportion is within 3%?
2. Find the 90% confidence interval for the population standard deviation if a sample of 16 had a standard deviation of 2.4.
3. Find the 99% confidence interval for the population standard deviation if a sample of 27 had a standard deviation of 25.4.
4. In a sample of 250 dogs, 30 were registered with the AKC. What is the 95% confidence interval for the population proportion?
5. What sample size is needed to find the percent of the customers at a store that are married, if 90% confidence is desired to be within a 5% margin of error?
Create a set of data that can be modeled as a polynomial function. Please provide a reference to the data. Plot the data using Microsoft Excel including the equation for the fit.
a company is studying the feasibility of buying an elevator for a building under construction. one proposal is a
an average of 5 cars arrive per hour at a restaurant. assume that the number of cars arriving perhour follows poisson
Use a 5% significance level (95% confidence level) to test the claim that the different vehicle categories have the same mean MPG.
supposed that a b and c are mutually independent events and that pa0.5 pb0.8 and pc0.9. find the probabilities that
facebook email electronic commerce and collaborative sites for both work and leisure are a normal part of our everyday
How many bolts should be sampled in order to make us 95% confident that the sample mean bolt length is within .02 inches of the true mean bolt length?
problem 1.the drunken professor has a class of 34 students. he wants to divide them into seventeen pairs of partners
Suppose you manage Tennessee Grilled Pork, a fast food restaurant specializing in pork sandwiches and pork chops on a stick. You have decided to build a new restaurant and have 2 possible site locations
a population has mu100 and sigma20. if you select a single score from this population on the average how close would it
A group of 12 patients are given the medicine. If the claim is true, what is the probability that 8 have relief in a few minutes?
Following sample data shows the weekly closing price of ABC stock. Compute the sample mean and variance from this data set.
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