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Suppose you were given the task of estimating the proportion of drivers in Troy, AL who text while they drive. Discuss what factors you must consider and how you would accomplish this. Don't forget to discuss sampling issues.
How many different combinations of the clients could be considered for inclusion into his limited schedule for that day?
the data below are sales y in thousands of dollars per week for home improvement outlets in each of four cities. the
Determine the mean and standard deviation of the data. What percentage of the data lies within one standard deviation of the mean value?
A random sample of 40 clock batteries of this brand was selected. There is the probability of 0.95 that the sample mean lifetime will be less than t hours.What is the value of t?
Find the sample mean and sample standard deviation of the amount citizens spend per year. When finding a confidence interval for the true mean spent of ALL citizens, should we use a z-score or a t-score? Why?
a prospective purchaser of a toy store wishes to estimate the mean dollar amount of sales per customer at a toy store
What is the standard deviation of the sampling distribution of the sample mean x if a sample of 64 students is selected at random from the entire freshman class?
The cost of each book is a random variable with mean 30. What is the expected value of his total expenditure? Find the joint PMF of K and N. Find the marginal PMF of N.
A study investigated the perception of corporate ethical values among individuals specializing in marketing. Using a=.05 and the following data (higher scores indicates higher ethical values) test for significant differences in perception among th..
Compute the proper measure of association of smoking and lung cancer.
a building has ten floors plus a basement if 12 people get into an elevator at the basement and each chooses a floor at
Estimating the value of the population mean on the basis of the sample mean alone produces a(n):
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