A researcher is interested in the fast-food eating habits of American college students. A group of 50 students is interviewed and the researcher finds that these students eat an average of 2.3 commercially prepared meals per week. For this study, the average of 2.3 meals is an example of a ______. a. parameter b. statistic c. population d. sample

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Answer 1

Textbook Question

Chapter 1.1, Problem 1LC

A researcher is interested in the fast-food eating habits of American college students. A group of 50 students is interviewed and the researcher finds that these students eat an average of 2.3 commercially prepared meals per week. For this study, the average of 2.3 meals is an example of a ______.

a. parameter
b. statistic
c. population
d. sample

Expert Solution & Answer

To determine

The type of example for the average of 2.3 meals.

Answer to Problem 1LC

The correct option is b. statistic.

Explanation of Solution

Reason for correct answer:

Since, average is taken over sample observations. So, it’s a function of sample observations, therefore average 2.3 is a statistic.

Reason for incorrect answer:

Option a.: Parameter is the function of population observations but we are given average of sample observations.

Option c.: Since, population is not a numerical value, so average 2.3 cannot be example of population.

Option d.: Since, sample is not a numerical value, so average 2.3 cannot be example of sample.

Conclusion:

The correct answer is b. statistic.

Statistics Concept Introduction

Introduction:

Parameter:

A parameter is a functional unit or a numerical characteristic obtained from a population.

Statistic:

Statistic is a numerical characteristic obtained from a sample. A sample is a subset or part of a population.

Population:

A collection of all outcomes, people or measurements of interest is termed as population.

Sample:

The information about the population is obtained from the sample. That is, a sample is considered to be a subset of the given population.

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20 km, because GISS Worksheet 10 Jesse runs a small business selling and delivering mealie meal to the spaza shops. He charges a fixed rate of R80, 00 for delivery and then R15, 50 for each packet of mealle meal he delivers. The table below helps him to calculate what to charge his customers. 10 20 30 40 50 Packets of mealie meal (m) Total costs in Rands 80 235 390 545 700 855 (c) 10.1. Define the following terms: 10.1.1. Independent Variables 10.1.2. Dependent Variables 10.2. 10.3. 10.4. 10.5. Determine the independent and dependent variables. Are the variables in this scenario discrete or continuous values? Explain What shape do you expect the graph to be? Why? Draw a graph on the graph provided to represent the information in the table above. TOTAL COST OF PACKETS OF MEALIE MEAL 900 800 700 600 COST (R) 500 400 300 200 100 0 10 20 30 40 60 NUMBER OF PACKETS OF MEALIE MEAL

Let X be a random variable with support SX = {−3, 0.5, 3, −2.5, 3.5}. Part ofits probability mass function (PMF) is given bypX(−3) = 0.15, pX(−2.5) = 0.3, pX(3) = 0.2, pX(3.5) = 0.15.(a) Find pX(0.5).(b) Find the cumulative distribution function (CDF), FX(x), of X.1(c) Sketch the graph of FX(x).

Answer 2

Textbook Question

Chapter 1.1, Problem 1LC

A researcher is interested in the fast-food eating habits of American college students. A group of 50 students is interviewed and the researcher finds that these students eat an average of 2.3 commercially prepared meals per week. For this study, the average of 2.3 meals is an example of a ______.

a. parameter
b. statistic
c. population
d. sample

Expert Solution & Answer

To determine

The type of example for the average of 2.3 meals.

Answer to Problem 1LC

The correct option is b. statistic.

Explanation of Solution

Reason for correct answer:

Since, average is taken over sample observations. So, it’s a function of sample observations, therefore average 2.3 is a statistic.

Reason for incorrect answer:

Option a.: Parameter is the function of population observations but we are given average of sample observations.

Option c.: Since, population is not a numerical value, so average 2.3 cannot be example of population.

Option d.: Since, sample is not a numerical value, so average 2.3 cannot be example of sample.

Conclusion:

The correct answer is b. statistic.

Statistics Concept Introduction

Introduction:

Parameter:

A parameter is a functional unit or a numerical characteristic obtained from a population.

Statistic:

Statistic is a numerical characteristic obtained from a sample. A sample is a subset or part of a population.

Population:

A collection of all outcomes, people or measurements of interest is termed as population.

Sample:

The information about the population is obtained from the sample. That is, a sample is considered to be a subset of the given population.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Textbook Question

Chapter 1.1, Problem 1LC

A researcher is interested in the fast-food eating habits of American college students. A group of 50 students is interviewed and the researcher finds that these students eat an average of 2.3 commercially prepared meals per week. For this study, the average of 2.3 meals is an example of a ______.

a. parameter
b. statistic
c. population
d. sample

Expert Solution & Answer

To determine

The type of example for the average of 2.3 meals.

Answer to Problem 1LC

The correct option is b. statistic.

Explanation of Solution

Reason for correct answer:

Since, average is taken over sample observations. So, it’s a function of sample observations, therefore average 2.3 is a statistic.

Reason for incorrect answer:

Option a.: Parameter is the function of population observations but we are given average of sample observations.

Option c.: Since, population is not a numerical value, so average 2.3 cannot be example of population.

Option d.: Since, sample is not a numerical value, so average 2.3 cannot be example of sample.

Conclusion:

The correct answer is b. statistic.

Statistics Concept Introduction

Introduction:

Parameter:

A parameter is a functional unit or a numerical characteristic obtained from a population.

Statistic:

Statistic is a numerical characteristic obtained from a sample. A sample is a subset or part of a population.

Population:

A collection of all outcomes, people or measurements of interest is termed as population.

Sample:

The information about the population is obtained from the sample. That is, a sample is considered to be a subset of the given population.

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Answer 4

Textbook Question

Chapter 1.1, Problem 1LC

A researcher is interested in the fast-food eating habits of American college students. A group of 50 students is interviewed and the researcher finds that these students eat an average of 2.3 commercially prepared meals per week. For this study, the average of 2.3 meals is an example of a ______.

a. parameter
b. statistic
c. population
d. sample

Expert Solution & Answer

To determine

The type of example for the average of 2.3 meals.

Answer to Problem 1LC

The correct option is b. statistic.

Explanation of Solution

Reason for correct answer:

Since, average is taken over sample observations. So, it’s a function of sample observations, therefore average 2.3 is a statistic.

Reason for incorrect answer:

Option a.: Parameter is the function of population observations but we are given average of sample observations.

Option c.: Since, population is not a numerical value, so average 2.3 cannot be example of population.

Option d.: Since, sample is not a numerical value, so average 2.3 cannot be example of sample.

Conclusion:

The correct answer is b. statistic.

Statistics Concept Introduction

Introduction:

Parameter:

A parameter is a functional unit or a numerical characteristic obtained from a population.

Statistic:

Statistic is a numerical characteristic obtained from a sample. A sample is a subset or part of a population.

Population:

A collection of all outcomes, people or measurements of interest is termed as population.

Sample:

The information about the population is obtained from the sample. That is, a sample is considered to be a subset of the given population.

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Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

To determine

The type of example for the average of 2.3 meals.

Answer to Problem 1LC

The correct option is b. statistic.

Explanation of Solution

Reason for correct answer:

Since, average is taken over sample observations. So, it’s a function of sample observations, therefore average 2.3 is a statistic.

Reason for incorrect answer:

Option a.: Parameter is the function of population observations but we are given average of sample observations.

Option c.: Since, population is not a numerical value, so average 2.3 cannot be example of population.

Option d.: Since, sample is not a numerical value, so average 2.3 cannot be example of sample.

Conclusion:

The correct answer is b. statistic.

Statistics Concept Introduction

Introduction:

Parameter:

A parameter is a functional unit or a numerical characteristic obtained from a population.

Statistic:

Statistic is a numerical characteristic obtained from a sample. A sample is a subset or part of a population.

Population:

A collection of all outcomes, people or measurements of interest is termed as population.

Sample:

The information about the population is obtained from the sample. That is, a sample is considered to be a subset of the given population.

Answer 8

Expert Solution & Answer

To determine

The type of example for the average of 2.3 meals.

Answer to Problem 1LC

The correct option is b. statistic.

Explanation of Solution

Reason for correct answer:

Since, average is taken over sample observations. So, it’s a function of sample observations, therefore average 2.3 is a statistic.

Reason for incorrect answer:

Option a.: Parameter is the function of population observations but we are given average of sample observations.

Option c.: Since, population is not a numerical value, so average 2.3 cannot be example of population.

Option d.: Since, sample is not a numerical value, so average 2.3 cannot be example of sample.

Conclusion:

The correct answer is b. statistic.

Statistics Concept Introduction

Introduction:

Parameter:

A parameter is a functional unit or a numerical characteristic obtained from a population.

Statistic:

Statistic is a numerical characteristic obtained from a sample. A sample is a subset or part of a population.

Population:

A collection of all outcomes, people or measurements of interest is termed as population.

Sample:

The information about the population is obtained from the sample. That is, a sample is considered to be a subset of the given population.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

To determine

The type of example for the average of 2.3 meals.

Answer 12

Answer to Problem 1LC

The correct option is b. statistic.

Answer 13

Explanation of Solution

Reason for correct answer:

Since, average is taken over sample observations. So, it’s a function of sample observations, therefore average 2.3 is a statistic.

Reason for incorrect answer:

Option a.: Parameter is the function of population observations but we are given average of sample observations.

Option c.: Since, population is not a numerical value, so average 2.3 cannot be example of population.

Option d.: Since, sample is not a numerical value, so average 2.3 cannot be example of sample.

Conclusion:

The correct answer is b. statistic.

Answer 14

Statistics Concept Introduction

Introduction:

Parameter:

A parameter is a functional unit or a numerical characteristic obtained from a population.

Statistic:

Statistic is a numerical characteristic obtained from a sample. A sample is a subset or part of a population.

Population:

A collection of all outcomes, people or measurements of interest is termed as population.

Sample:

The information about the population is obtained from the sample. That is, a sample is considered to be a subset of the given population.

Answer 15

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