Avariable such as z, whose value is z = x1x2, is added to a general linear model in order to account for potential effects of two variables x1 and x2 acting together. this type of effect is

a. called interaction.
b. called multicollinearity effect.
c. one of the transformation effects.
d. impossible to occur.

Malcolm has several receipts from recent transactions that he entered in his records. the receipts include an atm receipt for an $80.00 deposit, a grocery store receipt for $25.50, and a paycheck deposit slip for $650.00 when he finishes entering his transactions, malcolm realizes that his balance is incorrect. assuming that malcolm had no beginning balance, what should his correct balance be?

When color is used on a topographical drawing, black is used to represent what?

One question from a survey was "how many credit cards do you currently have? " the results of the survey are provided. complete parts (a) through (g) below. click the icon to view the survey results. (a) determine the mean number of credit cards based on the raw data. the mean is 3.113.11 credit cards. (type an integer or a decimal. do not round.) (b) determine the standard deviation number of credit cards based on the raw data. the standard deviation is 1.9111.911 credit cards. (round to three decimal places as needed.) (c) determine a probability distribution for the random variable, x, the number of credit cards issued to an individual. x (# of cards) p(x) x (# of cards) p(x) 1 0.280.28 6 nothing 2 nothing 7 nothing 3 nothing 8 nothing 4 nothing 9 nothing 5 nothing 10 nothing (type integers or decimals. do not round.)