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In the following data pairs A=percentage of voters who voted Democrat B=percentage of voters who voted Republican In a recent national election. The data are paired by county. Dem Rep 42.2 35.4 34.5 45.8 44 39.4 34.1 40 41.8 39.2 40.7 40.2 36.4 44.7 43.3 37.3 39.5 40.8 35.4 39.3 44.1 36.8 41 35.5 42.8 33.2 40.8 38.3 36.4 47.7 40.6 41.1 37.4 38.5 Analyze the data in the normal fashion using SPSS. Find out whether the counties tested percentage of voters is more democratic or republican.
Below are revenue and profit (both in $ billions) for nine large entertainment companies.
Find the 95% confidence interval for the true population mean. Identify the point estimate for mean and margin of error.
In general how is the magnitude of the standard error of estimate related to the value of correlation?
Statistics Questions Set: If the mean number of hours of television watched by teenagers per week is 12 with a standard deviation of 2 hours, what proportion of teenagers watch 16 to 18 hours of TV a week? (Assume a normal distribution.)
Estimate the true mean price for this particular model with 95% confidence?
Use your calculator to find the mean and standard deviation for the 9 observations that remain when you leave out the outlier. How does the outlier affect the values of x and s? Is s a resistant measure of spread?
The owner of Maumee Ford-Mercury wants to study the relationship between the age of a car and its selling price. Listed below is a random sample of 12 used cars sold at the dealership during the last year.
Many different kinds of data can be modeled using exponential and logarithmic functions. For example, exponential functions have been used by Thomas Malthus to describe the growth of human populations.
Suppose that p = P(female birth) = 0.5. A couple wishes to have exactly one female child in their family. They will have children until they have a girl, then they will stop having children. What is the probability that the family has three childre..
At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p -value.
At 99% confidence, test to determine if there is sufficient evidence to indicate that process 2 takes a significantly longer time to manufacture the Zip drives.
Determine the 95% confidence interval for your estimate what data have you utilized as the basis of your predictions what suppositions have you made.
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