a survey was conducted that asked police officers and firefighters which sandwich they preferred.

\begin{array}{lccc}
& \text{police officer} & \text{firefighter} & \text{totals} \\
\text{peanut butter sandwich} & 14 & 22 & 36 \\
\text{grilled cheese sandwich} & 21 & 13 & 34 \\
\text{totals} & 35 & 35 & 70
\end{array}

how many more police officers preferred grilled cheese sandwiches than peanut butter sandwiches?

Question

a survey was conducted that asked police officers and firefighters which sandwich they preferred.

\begin{array}{lccc}
& \text{police officer} & \text{firefighter} & \text{totals} \\
\text{peanut butter sandwich} & 14 & 22 & 36 \\
\text{grilled cheese sandwich} & 21 & 13 & 34 \\
\text{totals} & 35 & 35 & 70
\end{array}

how many more police officers preferred grilled cheese sandwiches than peanut butter sandwiches?

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "tutor", "mastery_adaptive_brevity" ], "needs_drawing": false, "concepts_used": [ "Two-Way Tables" ], "new_concepts": [], "current_concepts": [ "Two-Way Tables", "Bivariate Data" ] } ## Identify values from the table Using the *Two-Way Tables* knowledge point $$ \begin{aligned} &\text{Police officers preferring grilled cheese} = 21\ &\text{Police officers preferring peanut butter} = 14 \end{aligned} $$ ## Calculate the difference Using the *Two-Way Tables* knowledge point $$ 21 - 14 = 7 $$

21

14

7

10

{ "subject": "Mathematics", "question_type": "Multiple Choice", "knowledge_point": [ "Mathematics", "Statistics", "Two-Way Tables" ] }

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QUESTION IMAGE

Question

Explanation:

Identify values from the table

Calculate the difference

Answer: