Given the Contingency Table Shown Here, What Is the Probability $\quad$

question 71

Multiple Choice

Given the contingency table shown here, what is the probability that a mother smoked during pregnancy or that she graduated from college? $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\text { Smoked during }$$\quad$ $\text { Didn't Smoke during }$

$\begin{array}{|c|r|r|r|}\hline \text { Mother's Education } & \text { Pregnancy } & \text { Pregnancy } & \text { Row Total } \\\hline\text { Below High School } &393 & 640 &1,033\\\hline \text { High School }&560 & 1,370&1,930 \\\hline \text { Some College }&121 & 635 &756\\\hline\text { College Degree} &48 & 550 &598\\\hline \text { Col Total } &1,122 & 3,209&4,331\\\hline\end{array}$

• A).0111
• B).2591
• C).3861
• D).7850

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Definitions:

Inferential Statistics

This is a branch of statistics that makes predictions or inferences about a population based on a sample of data taken from that population.

Null Hypothesis

A default hypothesis that there is no effect or no difference, and any observed difference is due to sampling or experimental error.

Research Hypothesis

A specific, testable prediction about the relationship between two or more variables that a study aims to prove or disprove.

Descriptive Statistics

Statistical measures that describe the results of a study; descriptive statistics include measures of central tendency (e.g., mean), variability (e.g., standard deviation), and correlation (e.g., Pearson r).