Author: Anonymous

A researcher reports the following equation for a best-fitting straight line to a set of data points: Y = 0.48X + 12.03. Which value is the slope?

The probability of correctly rejecting a false null hypothesis is called the power of the decision-making process.

Homoscedasticity is the assumption that there is an equal variance of data points dispersed along the regression line.

If the coefficient of determination is .09 and the sum of squares regression is 88, then the total variation in Y must be SSY = 108.

A matched-pairs design is one example of a situation in which it is appropriate to use the estimation formula for the related samples t.

The value of power is influenced by the alpha level, sample size, and effect size.

A researcher randomly assigns 24 participants to one of four groups. At a .05 level of significance, the critical value for a one-way between-subjects ANOVA is 3.49.

The coefficient of determination is mathematically equivalent to h2.

A researcher measures the relationship between narcissism and willingness to help. If SSXY = 240, SSX = 320, and SSY = 410, then what is the value of the correlation coefficient?

A professor finds that the average SAT score among all students attending his college is 1,150 ± 150 (m ± s). He polls his class of 25 students and finds that the average SAT score is 1,200. Suppose he computes a one-sample z test at a .05 level of significance. What is his decision?