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Transform blood protein values. Refer to the previous exercise. With strongly skewed distributions such as this, we frequently reduce the skewness by taking a log transformation. We have a bit of a problem here, however, because some of the data are recorded as 0.00 and the logarithm of zero is not defined. For this variable, the value 0.00 is recorded whenever the amount of CRP in the blood is below the level that the measuring instrument is capable of detecting. The usual procedure in this circumstance is to add a small number to each observation before taking the logs. Transform these data by adding 1 to each observation and then taking the logarithm. Use the questions in the previous exercise as a guide to your analysis, and prepare a summary contrasting this analysis with the one that you performed in the previous exercise.
The Social Studies teacher received the following scores from her students: 100, 34, 88, 75, 30, 90. The range in this data set is calculated by subtracting the lowest value from the highest value.
study where a drug was given to 10 patients and a placebo to another group of 10 patients to determine if the drug has an effect on a patient's illness?
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.
During the 2005 Major League Baseball season, Derrek Lee had a 0.335 batting average. Construct a binomial probability distribution for the number of successes (hits) for four official at bats during this season.
Final model for the clothing retailer problem. The residual plots below show the residuals for the final model in the clothing retailer problem plotted against Purchase12 and Recency. Do the plots suggest any potential problems with the conditions..
Force the regression line to go through the point (5, 13). What is the new regression line? What is the new regression equation? Predict Y when X = 10.
suppose that a person who has recently helped start a company for the first time is randomly selected. the probability
In fitting a least squares line to n=15 data points, the following quantities were computed: SSxx=55, SSyy=198, SSxy=-88, x-bar=1.3, and y-bar=35.
The technician has just made an attempt to calibrate the machine. a. What is the probability that the machine is in adjustment?
Let X 1 , X 2 , X 3 , X 4 be a random sample from a Poisson distribution with parameter λ and let Y = X 1 + X 2 + X 3 + X 4 . You decide to test λ = 1.60 versus λ
Calculate the translation exposure loss to Trans-Mediterranean if the exchange rate at the end of the following quarter is £E6.00/£.
Write a procedure to find all ordered triples of distinct positive integers i, j, and k less than or equal to a given integer n that sum to a given integer s.
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