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For a test market, find the sample size needed to estimate the true proportion of consumers satisfied with a certain new product within ±0.04 at the 90 percent confidence level, assume you have no strong feeling about what the proportion is.
A sample of 25 concession stand purchases at the May 12 matinee of Spider-Man 3 showed a mean purchase of $ 7.29 with a standard deviation of $ 3.02. For the May 18 evening showing of the same movie.
In the following enthymemes, determine whether the missing statement is a premise or a conclusion.- Higher life-forms could not have evolved through merely random processes, because no organized beings could have evolved that way.
Create the 99% confidence interval on difference of average ages for viewers of the two TV programs. How can you interpret interval?
suppose 65 of all registered votes in a certain area favor a 7-day waiting period before purchase of a handgun. among
Determine the posterior probability that it was produced by machine M2.
a researcher conducts a study of white and black attitudes toward the police in her community.the percentage of white
Plot the standardized residuals against Cheese (if you are using a computer for your calculations, also produce a normal probability plot of the standardized.
a normally distributed quality characteristic is monitored throughuse of an x bar and r chart. these charts have the
What happens to supply, price, and quantity when the government imposes a tax on imports of foreign cars?
Using a 1% level of significance, can we say that there is a difference in the average waiting time between the two shops? Find the critical value(s).
The average score for the sample is M = 76. For the general population of college students, writing scores form a normal distribution with a mean of µ = 70.
Assume that the population proportion is .55. Compute the standard error of the proportion,(), for sample sizes of 100, 200, 500, and 1000 (to 4 decimals).
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