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Twelve percent of all US households are in California. A total of 3.3 percent of all US households earn over 250, 000 per year, while a total of 6.3 percent of California households earn over 250, 000 per year. If a randomly chosen US household earns over 250, 000 per year, what is the probability it is from California?
In testing whether each of the independent variables (Xs) in a multiple regression equation is statistically significant in explaining the dependent variable (Y), one uses the:
a computer system allows user ids that are three four or five characters long. repeated characters are allowed. the
derive the expected mean squares for a two-factor analysis of variance with one observation per cell assuming that both
Find the probability that the time taken for a randomly chosen customer to be dealt with by a cashier is more than 180s.
The response variable is the change in cholesterol level after two months of treatment. An analysis of variance will be used to compare the three treatments. What null hypothesis is tested by this ANOVA F-test?
suppose that fifty-two percent of the residents of the city eugene think that arizona will defeat oregon in their next
Identify a research issue, opportunity, or problem that uses data that has absolute zero measurements. Some examples include a team member's stock portfolios performance
question 1a major u.s. automaker has evaluated that the city mileage for one of its new suv models is normally
What is the probability that the sample proportion p of an SRS of size n = 1000 Who say their health is excellent lies between 26% and 32%?
An average department store sells 350 men's suits per year. The men's suit departments at a particular national chain of stores claim they sell more than the industry average. In 35 of their stores, they sold, on the average, 430 suits per year wi..
Assume that, among residents of a large Florida subdivision, the population mean age is 65 years old, the population standard deviation is 2 years, and that the age variable is distributed normally.
a doctor studies the side effects of a drug on a male and female. following data was obtained for a random sample of
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