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Age and party
The Gallup Poll conducted a representative telephone survey during the first quarter of 1999. Among the reported results was the following table concerning the preferred political party affiliation of respondents and their ages. Is there evidence of agebased differences in party affiliation in the United States?
a) Will you conduct a test of homogeneity or independence? Why?
b) Test an appropriate hypothesis.
c) State your conclusion, including an analysis of differences you find (if any).
the following data were collected on the height inches and weight pounds of women
Determine the margin of error in estimating the population mean. a sample of 68 college students yields a mean annual income of $3248.
Assume the branch manager requested estimates of the mean selling price of Gulf View condominiums with a margin of error of $40,000 and the mean selling price of No Gulf View condominiums with a margin
Distinct random variable
When are differences between average or actual results important and how can you or your department decide whether or not the observed differences over time are important?
an apartment building has 8 floors? if seven people get on the elevator on the first floor what is the probability
a population of cereal boxes has a normal weight with a mean of 16 ounces and a standard deviation of 0.2 ounces. if a
Find the probability of observing a sample mean of 0.985 liters or less in a sample of 70 bottles, if the beverage dispensing unit functions properly.
Suppose that, in a sample of 200, we observe 140 successes. Is this sufficient evidence at the 1% significance level to indicate the the population proportion of successes is greater than 65%
A survey of 30 adults found that the mean age of a person's primary vehicle is 5.6 years. Assuming the standard deviation of the populaiton is 0.8 year, find the 99% confidence interval estimate for the population mean.
A randomly selected full-grown adult female okapi weighs between 425 and 525 pounds?
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