Douglas A. Lind, William G.Marchal, Samuel A. Wathen
ISBN #9781260187502
9th Edition
741 Questions
Homework Questions
Basic Statistics for Business & Economics is a comprehensive guide that introduces essential statistical concepts tailored to business decision-making and economic analysis. The book begins by laying a strong foundation in descriptive statistics, emphasizing the transformation of raw data into meaningful graphical representations and frequency-based summaries. As it progresses, it delves into probability concepts, sampling methods, and hypothesis testing, providing readers with robust tools for making inferences about populations even when faced with real-world data complexities. The text further explores advanced topics like regression analysis, ANOVA, and nonparametric methods, ensuring that key statistical measures—from central tendencies to dispersion and model fit—are clearly explained and directly applicable to practical scenarios.
Chapter 1
What is Statistics?
Chapter 2
Describing Data: Frequency Tables, Frequency
Chapter 3
Describing Data: Numerical Measures
Chapter 4
Describing Data: Displaying and Exploring Data
Chapter 5
A Survey of Probability Concepts
Chapter 6
Discrete Probability Distributions
Chapter 7
Continuous Probability Distributions
Chapter 8
Sampling Methods and the Central Limit Theorem
Chapter 9
Estimation and Confidence Intervals
Chapter 10
One-Sample Tests of Hypothesis
Chapter 11
Two-Sample Tests of Hypothesis
Chapter 12
Analysis of Variance
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Chapter 13
Correlation and Linear Regression
Chapter 14
Multiple Regression Analysis
Chapter 15
Nonparametric Methods: Nominal-Level Hypothesis Tests
Problem 1
Some people are in favor of reducing federal taxes to increase consumer spending, and others are against it. Two persons are selected and their opinions are recorded. Assuming no one is undecided, list the possible outcomes.
Lucas Finney Numerade Educator
Problem 2
Slate is a daily magazine on the Web. Its business activities can be described by a number of variables. What is the level of measurement for each of the following variables? a. The number of hits on their website on Saturday between 8: 00 a.m. and 9: 00 a.m. b. The departments, such as food and drink, politics, foreign policy, sports, etc. c. The number of weekly hits on the Sam's Club ad. d. The number of years each employee has been employed with Slate.
Jon Southam Numerade Educator
Problem 3
Bi-lo Appliance Super-Store has outlets in several large metropolitan areas in New England. The general sales manager aired a commercial for a digital camera on selected local TV stations prior to a sale starting on Saturday and ending Sunday. She obtained the information for Saturday-Sunday digital camera sales at the various outlets and paired it with the number of times the advertisement was shown on the local TV stations. The purpose is to find whether there is any relationship between the number of times the advertisement was aired and digital camera sales. The pairings are: $$ \begin{array}{|lcc|} \hline \begin{array}{l} \text { Location of } \\ \text { TV Station } \end{array} & \begin{array}{c} \text { Number of } \\ \text { Airings } \end{array} & \begin{array}{c} \text { Saturday-Sunday Sales } \\ \text { (\$ thousands) } \end{array} \\ \hline \text { Providence } & 4 & 15 \\ \text { Springfield } & 2 & 8 \\ \text { New Haven } & 5 & 21 \\ \text { Boston } & 6 & 24 \\ \text { Hartford } & 3 & 17 \\ \hline \end{array} $$ a. What is the dependent variable? b. Draw a scatter diagram. c. Determine the correlation coefficient. d. Interpret these statistical measures.
Problem 4
What is the level of measurement for each of the following variables? a. Student IQ ratings. b. Distance students travel to class. c. The jersey numbers of a sorority soccer team. d. A student's state of birth. e. A student's academic class-that is, freshman, sophomore, junior, or senior. f. Number of hours students study per week.
Problem 5
A survey of 34 students at the Wall College of Business showed the following majors: $$ \begin{array}{lr} \text { Accounting } & 10 \\ \text { Finance } & 5 \\ \text { Economics } & 3 \\ \text { Management } & 6 \\ \text { Marketing } & 10 \end{array} $$ From the 34 students, suppose you randomly select a student. a. What is the probability he or she is a management major? b. Which concept of probability did you use to make this estimate?
Problem 6
In a marketing study, 100 consumers were asked to select the best digital music player from the iPod Touch, Sony Walkman, and Zune HD. To summarize the consumer responses with a frequency table, how many classes would the frequency table have?
Nick Johnson Numerade Educator
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