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Basic data transformation includes recoding data, so what conditions suggest that a ratiot variable should be recoded into a dichotomous variable? Please list conditions.
Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect?
A wildlife biologist wants to do a test to see if there is a genetic trait linked to industrial toxins. Previous research says the trait is usually found in one out of every thirty frogs.
The shirt was a mesh polo shirt. Given this information, what is ths probability that the mesh polo shirt came from box 1?
Chrysler Corporation agrees to allow you to randomly select 40 of its new Dodge Caravans to test the highway mileage. Chrysler claims that the caravans get 28mpg on the highway.
The Dean of Students believes that the costs are greater this semester. What is the test value for this hypothesis?
The mean height of a certain plant is 160 centimeters. Suppose a botanist wants to carry out a hypothesis test to see if the mean height when these plants are treated with a certain chemical differs from 160. What is the null hypothesis and the al..
Suppose a random sample of 500 adults is asked, "Do you own a credit card?" Describe the sampling distribution of p ^ , the proportion of adults who own a credit card.
Explain this result (including the underlying logic of the computations) to a person who understands hypothesis testing involving a single sample and a known population, but knows nothing about t tests.
Why might supposition of normal population be doubtful? Problem arises when?
The estimated simple linear regression equation minimizes the sum of the squared deviations between each value of Y and the line.
Part 1: Define and explain historical research. Explain a situation in which historical research would be appropriate. Part 2: Explain the difference between external and internal evidence and give examples of each.
If a male soldier and female soldier are paired up what will be the mean and standard deviation for the difference in heights for each possible pair?
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