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Heights of men on a baseball team have a bell-shaped distribution with a mean of 181 cm and a standard deviation of 5 cm. Using the empirical rule, what is the approximate percentage of the men between the following values? A. 176 cm and 186 cm B. 166 cm and 196 cm.
The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean for a sample of n = 100 is 2 points. Explain the difference in the standard error for the two sampl..
Suppose that 800 jawbreakers are selected at random from the production lines. Would it be unusual for this sample of 800 to contain 406 jawbreakers that weigh more than .4 ounces?
One day, you notice your 6' 2" roommate's size 12 shoes and comment, "I think height and foot size are correlated". You're somewhat surprised (and irked) by his response, "I think short people have big mouths."
Porphyrin is a pigment in blood protoplasm and other body fluids that is significant in body energy and storage. Let x be a random variable that represents the number of milligrams of porphyrin per deciliter of blood.
Would it be reasonable to conclude that the 5 percent of the employees are not able to pass the random drug test?
Name six virtues and characteristics of problems and hypothesis. Name some tips for identifying and developing formal research problems.
At the end of class, our teacher said "If you're perceptive, you may have noticed that a regression analysis produced by the Excel Data Analysis ToolPak contains an ANOVA table.
The length of a particular telemarketing phone call has an exponential distribution with a mean equal to 1.5 minutes. Find the probability that the length of a randomly selected call will be between 30 - 50 minutes and 1 minuter or longer.
Your younger brother comes home one day after taking a science test. He says that someone at school told him that "60% of the students in the class scored above the median test grade." What is wrong with this statement? What if he said "60% of the..
What value is business research and hypothesis testing to a company? How long should it take a company to complete a scientific research study?
At α = .05, is there a difference in variances? Illustrate all steps clearly, including the illustration of the decision rule.
In this forum post provide your results also elucidate what they mean in context of your favorite channel. To find 95 percent confidence interval for given data.
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