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The U.S. adult population by age is as follows (The World Almanac, 2009). The data are in millions of people. Age Number 18 to 24 29.8 25 to 34 40.0 35 to 44 43.4 45 to 54 43.9 55 to 64 32.7 65 and over 37.8 Assume that a person will be randomly chosen from this population.
a. What is the probability the person is 18 to 24 years old?
b. What is the probability the person is 18 to 34 years old?
c. What is the probability the person is 45 or older?
A company is creating 5 new divisions and 8 managers are eligible to be appointed head of a division. With 8 managers trying for 5 jobs, how could the five new heads be arranged?
If 700 stolen cars are randomly selected, what is the mean and standard deviation of the number of cars recovered after being stolen?
The heights of 40 randomly selected people and the heights of their mothers are recorded. Statdisk is used to run a linear correlation and regression analysis. The partial results are provided below:
It was found that the correlation is about .80 and the regression equation is handspan = 3 + 0.35 height What is the predicted handspan for someone 5 feet tall?
A manufacturer of car batteries claims that his batteries will last, on average, 3 years with a variance of 1 year. If 5 of these batteries have lifetimes of 1.9, 2.4, 3.0, 3.5, and 4.2 years
Make sure you include a complete ANOVA summary table. Also, report the appropriate null and research hypotheses and the critical value (alpha = 0.05).
Determine if your survey questions are appropriate for researching your business problem, and explain why they are. Identify the level of measurement being used for each of your survey questions.
The Mumbai Cricket Club, a professional club for the cricketers
Confirm whether given random variable is binomial distribution or not. If this experiment is finished with replacement, explain why.
Draw the probabilities out like an org. chart, then choose to buy from the airline that is least likely to go bankrupt in June. Your research will include getting the bankruptcy.
A curious parent observes a cereal commercial that states their product has an average of 50 pieces of real fruit per box with a standard deviation of 6 pieces per box. She decides to check the accuracy of this statement by selecting 100 boxes of cer..
Use the t test to determine whether the slope of the regression model is significant at α = 0.05.
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