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Which of the following is not a requirement for regression analysis?
a: outliers can have a strong effect on the regression equation, so remove any outliers if they are known to be errors
b: visual examination of the scatterplot shows that the poitns approximate a straight line pattern
c: the method for regression analysis line is not robut. its seriously affected by a small departrue from a normal dsitribution
d: the sample of paired (x,y) data is a random sample of quantitative data
Critically discuss the auto-covariance function of a stationary time series and its basic properties.
question calculate sp the sum of products of deviations for the following scores. note both means are decimal values
Distributed with a mean of $150 and standard deviation of $25. About how many of the students spend less than $100 on books?
a certain type of yarn is manufactured under specifications that the mean tensile strength must be 20 pounds. a random
A psychologist studied self-esteem scores and found the data set to be normally distributed with a mean of 50 and a standard deviation of 6. A raw score of 47 is associated with what percentile?
Bell-shaped with a mean of $45, 000 and a standard deviation of $3, 500. What percentage of teachers earn anywhere from $38, 000 to $48, 500?
computing the probability values for the given discrete distribution.five people are sick with the flu on a bus of 51
Discuss the assumptions for using a chi-square test. Research articles using and provide practical examples from the reseach to support your assumptions.
Construct a probability distribution table. (b) if p=0.4, find the expected net profit. (c) what is the smallest value of P for which the owner will take the risk to undertake this project?
Describe a where you might want to use a dummy variable in a multiple regression. What would the dummy variable buy you in that situation?
Solve the following questions involving fundamental operations on polynomials. Find p(x) + 4q(x) given p(x)=4x4 + 10x3 - 2x2 + 13 and q(x) = 2x4+ 5x2 - 3
a clinical trial tests a method designed to increase the probability of conceiving a girl. in the study 562 babies were
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