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Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probabilities table to find the probability of x successes given the probability p of suces on a single trial.
n = 8, x = 6, p = 0.65
P(6) = _____
He asks you to develop a proposal for the study and submit it to him. Develop the management-research question hierarchy that will help you to develop a specific proposal.
Can we conclude from this that most workers there earn between $25 and $35 per hour? Is this right interpretation for margin of error?
1. in a recent survey of 4513 college undergraduates 20 reported having fallen asleep in class. to test this
At the .01 significance level, is there a difference in the mean number of times men and women order take-out dinners in a month? What is the p-value?
a random sample of the lifetime of 49 ultraillum light bulbs has a mean of 3960 hours and a standard deviation of 200
To find out whether the course is effective in increasing sales, the appropriate set of hypothesis for testing is:
A computer manufacturer offers a help line that purchasers can call for help 24 hours a day, 7 days a week. Clearing these calls for help in a timely fashion is important to the company's image.
What is the probability of finding 1 or more children with chronic bronchitis in a population where the incidence rate of chronic bronchitis is 10% (like the one above?)
What should the pass mark be set at if 15% are to fail? If the examiner wishes to grant the top 20% A's, what should be the cut-off mark for an A?
What kind of correlation do you expect to find between annual income and amount spent on car? Will it be positive or negative?
question do students at your school study more less or about the same as at other business schools? business
Increasing confidence level will increase width of confidence interval. This is because the fact that increasing confidence interval will increase value of z(α/2), which will increase the size of standard error (z*s/√n).
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