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A local politician wants an estimate of the proportion of the population who support her fiscal policies. She wants the estimate to be within .06 of the true proportion. Assume a 95 percent level of confidence. The politician's advisors estimated the proportion supporting her fiscal policy to be .60. How large of a sample is required?
Establish a 99% Confidence interval about the difference in the proportion of the town voters and county voters who favor the proposal.
You are using a significance level of α = 0.05 to test a claim that p > 0.5. Your sample is a simple random sample of size n = 49. Calculate β for the test, assuming that the true population proportion is 0.7 and showing all work.
The mean of a normal probability distribution is 60; the standard deviation is 5.
Test the claim that for the adult population of one town, the mean annual salary is given by μ = $30,000.
Plan the scatter diagram
A monthly budget of $100,000 is available for both advertising and purchase of the fragrances. Develop and solve a linear optimization model to determine how much of each type of perfume should be produced to maximize the net profit.
If 900 users visited the site, would the probability that more than 250 of them click on an ad be higher or lower than the answer found in part
State the null and alternate hypotheses if you want to determine whether the mean amount spent is higher for men than for women,
Assuming that the Styrofoam absorbs a negligibly small amount of heat and that no heat was lost to the surroundings, what is the specific heat capacity of the metal?
Determine percent of the garages take between 29 hours and 34 hours to erect? Determine percent of garages take 28.7 hours or less to erect?
The linear correlation coefficient, r, measures the strength of the linear relationship the variables in a set of ordered pairs (x,y). What is the maximum and minimum values for r?
What are the null and alternative hypotheses in this situation?
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