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Group of three undergraduate and five graduate students are available to fill certain student government posts. If four students are to be randomly selected from this group, find the probability that exactly two undergraduates will be among the four chosen.
Do the above values appear to be in statistical control, justify your answer?
In what sense is this business problem? A societal problem? An individual problem?
The following sample data were obtained from three populations that did not follow a normal distribution. Compute the value of the test stastic. What is your decision on the null hypothesis?
For the data giben below, prepare a R-chart. Note that the sample size is three.
Find the mean, median, mode, variance, standard deviation, frequency table, cumulative frequency table, coefficient of variation, and mean deviation of the population.
At the time she was hired as a server at the restaurant, Beth was told, "You can average more than $20 a day in tips." Over the first 31 days she was employed, the mean daily amount of her tips was $21.76,
Determine the value of the finite population correction factor if population size is 1000 and the sample size is 300? What is the smallest sample size for which finite population correction factor must be Used?
The mayor of a small town would like to know whether a local bond issue is likely to pass or not. He mails a survey to 500 randomly selected voters.
Determine the probability distribution associated with these data.
What is the probability that the mean life-span of a sample of 64 randomly selected bulbs will exceed 727 hours?
A random sample of 36 drinks from a soft drink machine has an average content 7.6 ounces with an standard deviation of 0.48 ounces. Test the hypothesis ounces against the alternative hypothesis at the 0.05 level of significance.
Explain the logic of the ordinary least Square (OLS) method? How are the least squares formulas for the slope and intercept derived?
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