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With a 5% margin of error, a 95% confidence level, and a population size of 2,000,000, how do you calculate the sample size for the mean? No standard deviation or population proportion is provided. Please show your work.
Surface area of a cube. The formula A = 6V^-2/3(-2/3 power) gives the surface area of a cube in the volume V. What is the volume of a cube with a surface area 12 square feet?
Tim has two more problems to solve on his test, but he doesn't know how long it will take to finish them. He assigns mutually irrelevant normal distributions to the times
Of those not having lung disease, 25.3% are smokers. Determine the probability that a randomly selected smoker has lung disease.
Determine the mean number of times the machine was used per day.
Why do we need a new test method to compare the means of 3 or more populations? Why can't we just use a series of z-tests or t-tests to compare all of the possible pairs of population means to see if one (or more) is different?
Forecast 2 out of sample forecasts for the final model using following data: Final Estimates of Parameters AR 1 0.9647 0.0388 24.84 0.000.
Given the linear correlation coefficient r and the sample size n, determine the critical values of r and use your finding to state whether or not the given r represents a significant linear correlation
a) Find the price that this model estimates. b) The house just sold for $291,000 Find the residual corresponding to this house. c) What does that residual say about this transaction?
We did not study the Bernoulli distribution in any detail in Section 3, because it can be looked upon as a binomial distribution with n = 1. Show that for the Bernoulli distribution, μ'r = θ for r = 1, 2, 3, ..., by
In another carnival game a player tosses a penny from a distance of about 5 feet onto the surface of a table ruled in 1-inch squares. If the penny (3/4 inch in diameter) falls entirely inside a square (not touching a line, the player wins a quarte..
6 are won by peace and 4 are won by queen and 2 end in a draw. they agree to play a tournament consisting of 3 games. Find the probability that: 2 games end in a row.
Assume the sample is taken from a normally distributed population. Construct 98% confidence intervals for (a) the population variance o2 and (b) the population standard deviation.
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