During the First Four Months of the Year, Jack Earned

question 88

Multiple Choice

During the first four months of the year, Jack earned $740, $570, $1350 and $1410. If Jack must have an average salary of at least $1020 in order to earn retirement benefits, what must Jack earn in the
Fifth month in order to qualify for benefits?

• A)at least $1018
• B)at most $1020
• C)at most $1018
• D)at least $1030

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Definitions:

Kruskal-Wallis Test

A non-parametric test that is utilized to ascertain if statistically meaningful differences exist among two or more categories of an independent variable concerning a continuous or ordinal dependent variable.

Significance Level

The probability of rejecting the null hypothesis in a statistical test when it is actually true, typically denoted by alpha.

Two-Independent Sample T-Test

A statistical test used to compare the means of two independent groups to determine if there is a statistically significant difference between them.

Wilcoxon Signed Rank Test

The Wilcoxon signed rank test is a nonparametric statistical test used to compare the median of two related samples to determine if there are significant differences between them.