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A panel of 300 persons chosen for jury duty includes 30 under 25 years of age. Since the jury of 12 persons chosen from this panel to judge a narcotics violation does not include anyone under 25 years of age, the youthful defendant's attorney complains that this jury is not really representative. Indeed, he argues, if the selection were random, the probability of having one of the 12 jurors under 25 years of age should be many times the probability of having none of them under 25 years of age. Actually, what is the ratio of these two probabilities?
Critically illustrate out the term standard deviation. Define mathematical averages. Why is the standard deviation less than the mathematical average?
(a) Construct a histogram for the data and describe its properties. (b) Construct a runs chart for the data. (c) Write a brief summary of the two data displays contrasting the infor mation gained by each plot.
a sociologist studying the justice system has just written a paper detailing her findings after she examined the
a nascar team goes on tour for six moths. one major piece of equipment for the car is subject to breakdowns cause by
the selection of a proper seller is critical to the success of a project. all of the below would be considered good
a pump adds 48000 ftlbs to a steady flow rate of 5 ft3s . the fluid is water at 60 f. at the entrance to the pump the
calculate the mean deviation form 1 arithmetic mean 2 median 3 mode in respect of the marks obtained by nine students
Surface area of a cube. The formula A = 6V^-2/3(-2/3 power) gives the surface area of a cube in the volume V. What is the volume of a cube with a surface area 12 square feet?
1. Given the printout in Exercise 16.15, determine the approximate a. 90% confidence interval for the mean rating on test 4 for units that have been rated at 300, 500, and 400 on the first three tests.
She will make the mean raise $1000 and the standard deviation $179. Basing this on worker productivity (toys constructed), the most productive 10% of employees will see a raise of at least how much?
mens heights are normally distributed with a mean of 69.5 in. and standard deviation of 2.4 in. womens heights are
the management of red cat computers was considering launching a new product called the tiger 100. the problem was that
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