Instruction 2 -Referring to Instruction 2

question 200

Multiple Choice

Instruction 2.9
A sample of 200 students at a large university was taken after the final exam to ask them whether they went out on the weekend before the exam or spent the weekend studying, and whether they did well or poorly on the exam. The following table contains the result.
$$\begin{array} { | l | l | l | } \hline & \text { Did Well on Exam } & \text { Did Poorly on Exam } \\\hline \text { Studying for Exam } & 80 & 20 \\\hline \text { Went out on the weekend } & 30 & 70 \\\hline\end{array}$$
-Referring to Instruction 2.9,if the sample is a good representation of the population,we can expect _________ %of the students in the population to spend the weekend studying and do poorly on the exam.

• A) 50
• B) 20
• C) 45
• D) 10

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Definitions:

Body Mass Index

A numeric measure that calculates body fat based on an individual's weight and height, often used to assess health risks related to weight.

Diagnose Obesity

The process of determining whether an individual's body weight is in the range considered obese based on criteria such as Body Mass Index (BMI).

First Tooth

The emergence of the initial tooth in a baby, typically occurring between six months to one year of age.

Middle Childhood

A developmental phase typically ranging from about 6 to 12 years of age, characterized by cognitive, social, and physical growth.