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"Normal Distribution"
a bag contains 45 beans of three different varieties. each variety is represented 15 times in the bag. you grab 9 beans
The average number of customer complaints at the Full Moon Motel is five per day. Find the probability that on a typical day, the motel will receive
Forty percent of the time, sales are more than 470,000 and 10 percent of the time, sales are more than 500,000. What is the mean and standard deviation of the distribution?
A soft drink company has recently received customer complaints about its one-liter-sized soft drink products. Customers have been claiming that the one-liter-sized products contain less than one liter of soft drink.
What is the logic behind using the sum of the products of deviation scores as the numerator of the formula for the correlation coefficient? Is this logic sound? Why or why not?
How could the engineer increase the accuracy of the interval without changing the level of confidence?
the random variable x has a poisson distribution with mean 40. give an approximate value of the probability p 37 less
Fifty million of 94 million households watched the last episode of a popular television show. What percentage of households were not watching the show? Approximately ? % of households were not watching the last episode of the show.
construct a confidence interval of the population proportion at the given level of confidence.x860 n1100 94
Compare the two ratios obtained in part (b). A large difference would indicate a three-term interaction or effect modification, where frequent effects are different for physicians and nurses.
Using the critical value approach and the sample information reported below, carry out a test of this statement. Let α = 0.05.
four types of solar energy collectors were collected. the data is in the accompanying file.a construct an anova table.b
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