In a Study of 30 Customers' Utility Bills in Which

question 39

True/False

In a study of 30 customers' utility bills in which the monthly bill was the dependent variable and the number of square feet in the house is the independent variable,the resulting regression model is = 23.40 + 0.4x.Given this,the sample correlation coefficient is known to be positive.

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Definitions:

Sample Variances

A measure of dispersion that quantifies the spread of data points in a sample around the mean.

F-distributed

Refers to having a probability distribution known as the F-distribution, often used in the analysis of variance.

Chi-squared Variables

Random variables that follow a chi-squared distribution, often used in tests of statistical significance for categorical data.

Normal Populations

Refers to populations that follow a bell-shaped distribution curve, indicating a normal distribution of data.