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A random sample of II items is to be taken from a distribution with mean and standard deviation CI. (a) Use the Chebyshev inequality to determine the smallest number of relation n that must be taken in order to satisfy the following relation:
(b) Use the central limit theorem to determine the smallest number of items that must be taken in order to satisfy the relation in part (a) appro>mately.
three experiments investigating the relation between need for cognitive closure and persuasion were performed. part of
suppose that the reaction time sec to a certain stimulus is a continuous random variable with a density function given
the lenght of time x to complete a standard achievement test is approximately normally distributed with a mean of 58
Differences in Descriptive and Inferential Statistics and analyze the differences between descriptive and inferential statistics.
h1 the mean of sample a is significantly different than the mean of sample b. sample a 59 30 74 62 87 73 sample b 53 67
question suppose that new international students arrive in london according to a poisson process of rate lambda 2 per
Find the proportion of working days in which anywhere from 750 to 850 tons is mined. Find the probability that on a given day, the yield will be below 665 tons.
Fast Service, a chain of automotive tune-up shops, advertises that its personnel can change the oil, replace the oil filter, and lubricate any standard automobile in 15 minutes, on the average.
A 90% confidence interval for p1 - p2 given counts of 148 yes out of 170 sampled for Group 1 and 12 yes out 110 sampled for Group 2. Give the best estimate for p1 - p2, the margin of error, and the confidence interval.
Show that if a 2D Gaussian random vector Y- = (Y1, Y2) has uncorrelated components Y1, Y2, then those components are statistically independent random quantities.
What was the primary use of statistics in ancient times?- In what ways can business statistics be useful in today's business environment?
The two cars drove a combined total of 1450 miles, and the sum of their fuel efficiencies was 40 miles per gallon. What were the fuel efficiencies of each of the cars that week?
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