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It was reported that approximately 45% of all university professors are extroverted. Suppose you have classes with 6 different professors.
a) What is the probability that all 6 are extroverts?b) What is the probability that none of your professors are extroverts?c) What is the probability that at least 2 of your professors are extroverts?d) In a group of six professors selected at random, what is the expected number of extroverts? what is the standard deviation of the distributions?
A deck of 52 cards is dealt face up in a row. What is the probability that all 4 aces and all 4 kings are adjacent (but in any order)?
In a sample of 12 bank tellers at a local branch office, the 7 tellers who have completed the advanced training program offered by the bank have a lower average error rate in the processing of transactions than the remaining 5 tellers.
Evaluate the result in part c with the decision using the expected value approach.
Woodco manufactures tables and chairs. Each table and chair must be made entirely out of oak or entirely out of pine. A total of 150 board feet of oak and 210 board feet of pine are available.
Find out annual break-even volume for the Rolling Creek Textile Mill.
Find the regression equation and percentage of variance and test whether the equation is significant portion of the variance.
Medium-sized college town were surveyed, and it was found that 110 were regular voters. Estimate the true proportion of regular voters with 90% confidence and comment on your results.
The following data represent the cost of electricity for the period of July 2008 for a random sample of 50 one-bedroom apartments in a large city.
The chi-square goodness of fit is______________a one-tailed test with the rejection region in the right tail.
Historically, 70% of your customers at Rodale Emporium pay for their purchases using credit cars. In a sample of 20 customers, find the probability that
Calculate the MEAN and STANDARD DEVIATION for the distribution below:
What is the probability that a random sample of 36 students will have a mean verbal sat score that is great than 535?
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