Chapter 1, Problem 10A

(a)

Interpretation Introduction

Interpretation: Timing of the highest number of cars passes through the intersection needs to be determined.

Concept introduction: Visual display of data is defined as a graph. By using the given data, a student can create graph. Graph helps to understand any data easily.

Answer to Problem 10A

Time: $8am$

Explanation of Solution

According to the graph, $8am$ is the highest bar in the graph. So, at $8am$ the highest number of cars passes through the intersection.

(b)

Interpretation Introduction

Interpretation: Timing of the lowest number of cars passes through the intersection needs to be determined.

Concept introduction: Visual display of data is defined as a graph. By using the given data, a student can create graph. Graph helps to understand any data easily.

Answer to Problem 10A

Time: $12am$

Explanation of Solution

According to the graph, $12am$ is the lowest bar in the graph. So, at $12am$ the lowest number of cars passes through the intersection.

(c)

Interpretation Introduction

Interpretation: The trend in numbers of cars over the course of the day needs to be explained.

Concept introduction: Visual display of data is defined as a graph. By using the given data, a student can create graph. Graph helps to understand any data easily.

Answer to Problem 10A

From $12am$ to $7am$ number of cars will slowly increase and then dramatically peaks at $8am$ by $5pm$ .

Explanation of Solution

According to the graph, the number of cars slowly increases from $12am$ to $7am$ , then dramatically peaks at $8am$ by $5pm$ , then slowly declines.

(d)

Interpretation Introduction

Interpretation: A hypothesis explaining the trend in numbers of cars over the course of the day needs to be explained.

Concept introduction: Visual display of data is defined as a graph. By using the given data, a student can create graph. Graph helps to understand any data easily.

Answer to Problem 10A

The number of cars peaks during rush hours.

Explanation of Solution

The hypothesis is a specific, testable prediction. It elaborates, in concrete terms, what a person (or chemist) expects will happen in a certain circumstance.

According to the graph, the number of cars peaks during rush hours which are at $8am$ and $5pm$ .

(e)

Interpretation Introduction

Interpretation: A possible experiment that could test your hypothesis needs to be explained.

Concept introduction: Visual display of data is defined as a graph. By using the given data, a student can create graph. Graph helps to understand any data easily.

Answer to Problem 10A

A possible experiment that could test your hypothesis-whether the peak remains the same or not.

Explanation of Solution

Testing any supposition, principle, etc. is defined as an experiment. The hypothesis is a specific, testable prediction. It elaborates, in concrete terms, what a person (or chemist) expects will happen in a certain circumstance.After observations are completed, based on those observations, a hypothesis is created and then experiments are conducted.

A possible experiment:To see whether the peak remains the same or not, let us measure the number of cars passing through the intersection during weekdays and weekend.