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A bag contains four chips of which one is red, one is blue, one is green, and one is yellow. A chip is selected at random from the bag and then replace in the bag. A second chip is then selected at random. Make a list of the possible outcomes (for example, RB represents the outcome red chip followed by blue chip) and use your list to determine the probability that the two chips selected are the same color. (There are 16 possible outcomes)
A researcher conducted a study in which children with problems learning mathematics were offered the opportunity to purchase time with special tutors.- List three problems with that interpretation and explain why each is a problem.
How might one know if an error was made in accepting or rejecting the null hypothesis? Do you suppose the nature of the research has an influence on the selection of the significance level? Why or why not?
question suppose we analyzed the effect of grade point averages on grades in a specific class and found the results to
Head Start is a program for preschool children from educationally disadvantaged environments. Head Start began in 1964, and the data that follow.
the results of a mathematics placement exam at two different campuses of mercy college followcampus
Suppose P(X = 1) = 0.7, and therefore P(X = 0) = 1 - 0.7 = 0.3. Find the mean, variance, and standard deviation of X
studies indicate that the price elasticity of demand for potato chips is about 1.0 if a bag of potato chips currently
when conducting a hypothesis test with chi-square analysis the null hypothesis is rejected when the differences between
Truck tire life is normally distributed with a mean of 60,000 miles and a standard deviation of 4,000 miles. You bought four tires. What is the probability that the average mileage of the four tires exceeds 66,000 miles?
Why is the full-sample chi square significant when the pretest was not? What happened? Do you think that the second result is important?
Perform secondary data analysis by visiting the US Census Bureau's American FactFinder. Identify the various social and economic characteristics.
Suppose an e-mail survey asks respondents about how frequently they use the Internet to get information about Major League Baseball. If the survey takers
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