2.The principal of a high school wants to know how long his studentsspend doing homework at night on average. He wishes to take a random sampleof 60 students and record the number of hours spent on homework per night.Define the population, sample, parameter, and statistic.b)' Is the variable of interest qualitative or quantitative?c)The receptionist suggests asking the first 60 students to enter the schoollibrary. Why might the principal not want to choose this type of sample?d)Name a better sampling method the principal could use. Describe howthis sample could be collected.e)The principal has decided to plot the results using a graph. Name anappropriate graph he could use to visualize the data.

Answered: 2. The principal of a high school wants…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

2.
The principal of a high school wants to know how long his students
spend doing homework at night on average. He wishes to take a random sample
of 60 students and record the number of hours spent on homework per night.
Define the population, sample, parameter, and statistic.
b)
' Is the variable of interest qualitative or quantitative?
c)
The receptionist suggests asking the first 60 students to enter the school
library. Why might the principal not want to choose this type of sample?
d)
Name a better sampling method the principal could use. Describe how
this sample could be collected.
e)
The principal has decided to plot the results using a graph. Name an
appropriate graph he could use to visualize the data.

Expert Solution

Introduction

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There are type of variable, they are quantitative and qualitative. The numerical variables are measured as quantitative and the non numerical variable are measured as qualitative. Population is the whole subject of study and any fraction of such population is known as sample. Population unknown value is parameter and the sample unknown value is statistic.