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In a shipment of 71 vials, only 13 do not have hairline cracks. If you randomly select 2 vials from the shipment, what is the probability that none of the 2 vials have hairline cracks?
suppose it is known that the time spent by customers in a fast-food restaurant is a normally distributed variable with
What is the probability that a randomly selected respondent has a goal of getting rich?
The manger plugs their data into excel and without plotting comes up with the equation for the regression line. Using this equation they estimate the produce sales for the upcoming year. What mistakes did they make? Explain.
In a three-cornered paint ball duel, A, B, and C successively take shots at each other till only one of them remains paint free. Once hit, a player is out of the game and gets no more shots.
What is the relationship between the sign of the correlation coefficient and the sign of the slope of the regression line?
a researcher is studying the relationship between earnings for major electronic firms and research and development
If the manufacturer wanted the mean profit per coat (i.e., the expected profit) to be more than $30, what is the maximum reduction that can be offered per defect in the sample.
Find the value of the linear correlation coefficient r and find the value of the coefficient of determination r2, and interpret the meaning for this problem.
The 45-65 group, and 12% for the group over 65. Find the rejection region to test the claim that all ages have crash rates proportional to their driving rates.
a sample of 25 different payroll departments found that the employees worked an average of 310.3 days a year with a
In brief describe three situations in which the 'First In First Out' discipline rule is not applicable in queuing analysis. Provide examples of four situations in which there are limited, or finite population.
Using the finite population correction factor, compute the standard error for each of the three firms given a sample of size 50.
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