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Identify whether the following variables are numerical or categorical if numerical state whether the variable is discrete or continuous. if categorical state, whether the variable is nominal or ordinal. a-number of sexual partners. b-petal area of rose flowers. c- key on the musical scale. d-heart beat per minute of a tour de france cyclist, average over the duration of the race. e-stage of fruit ripeness. f- angle of flower orientation relative to postiion of the sun. g- tree species. h-year of birth. i-gender. j-birth weight?
The Roller Products Company produces roller skates and skateboards. It has three production lines. Production line 1 makes skateboard platforms.
Formulate a linear programming model for this problem (using QM on Windows and/or Excel on Windows)
Describe the types of decisions that do not involve uncertainty and risk and common approaches used for analyzying them.
What is the standard error of estimate? Describe with an example. What are the coefficients of the linear regression model and what do they mean? What are the various statistics reported in a regression output?
Given are five observations collected in a regretion study on two variables: What is the value of the standard error of the estimate?
A clinical investigator is interested in understanding the relationship between demographic factors and congestive heart failure, measured by a cardiac index (CI).
A random sample of 121 automobiles traveling on an interstate showed an average speed of 65 mph. From past information, it is known that the standard deviation of the population is 22 mph.
Create a real-world situation or problem involving children who have adhd. Within state the independent and dependent variables you would study
Your statistics instructor wants you to determine a confidence interval estimate for the mean test score for the next exam.
When using dummy variables in a regression equation to model a qualitative or categorical variable, the number of dummy variables should equal to
The heights of north American women are normally distributed with a mean of 64 inches and a standard deviation of 2 inches.
Find the probability that in a given month:
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