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Someone claims that the mean age of residents of a certain neighborhood is 50, but you suspect that the mean age is actually higher than that. A sample of 36 residents reveals a mean age of 53, with a sample standard deviation of 15.
a. State the null and alternative hypotheses.
b. Compute the value of the test statistic.
c. Taking α to be 0.05, what is/are the critical values associated with testing your hypothesis?
d. What conclusion do you come to?
What control limits should be applied to his sample?
Compute the following linear programming problem and describe the special case of a linear programming problem in which.
Create the estimated regression equation by calculating the values of b 0 and b 1
You play a game with two possible outcomes. Outcome A has probability 0.4 and outcome B has probability 0.6. When B occurs you win $2.00; otherwise, you lose $1.00. What is your expected value for this game?
The critical F value with 6 numerator and 60 denominator degrees of freedom at α = .05 is:
The Minneapolis Tribune ran an article on gender differences in shopping behavior. When 400 women were asked to respond to the question "Where I shop is influenced by which store has a greater variety," 60% answered "Yes.
Determine the probability the transmission will break down between 100,000 and 200,000 miles?
Develop a hypothesis to investigate this problem based on the claim of the heat pump manufacturer
Calculate a 3-month moving average forecast for months 4 through 9 also Compare the two forecasts by utilizing MAD. Which forecast appears to be more accurate.
Provided that the selected student excels in sports, determine the probability that the student is a boy?
Assume that the mean parameter θ for the RV L is unknown. To estimate it, a random sample of n = 10 light bulbs is selected, and the lifetime of each light bulb is measured. Let X denote the number of those 10 sampled light bulbs that burn longer ..
What does r 2 of .73 tell us? Is this a strong or weak correlation? How can you tell?
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