Basic Business Statistics
14th Edition
ISBN: 9780134684840
Author: BERENSON, Mark L., Levine, David M., Szabat, Kathryn A.
Publisher: Pearson,
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Textbook Question
Chapter 1, Problem 26PS
The cellphone brands owned by a sample of 20 respondents were:
Apple, Samsung Appel, Nokia, Blackberry, HTC, Apple, Samsung, HTC, LG, Blueberry, Samsung, Samsung, APPLE, Motorola, Apple, Samsun, Apple, Samsung
a. Clean these data and identify any irregularities in the data.
b. Are these any missing values in this set of 20 respondents? Identify the missing values.
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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).
Chapter 1 Solutions
Basic Business Statistics
Ch. 1 - Four different beverages are sold at a fast-food...Ch. 1 - U. S. businesses are listed by size small medium,...Ch. 1 - The time it takes to download a video from the...Ch. 1 - For each of the following variables, determine...Ch. 1 - The following information is collected from...Ch. 1 - For each of the following variables, determine...Ch. 1 - For each of the following variables, determine...Ch. 1 - Suppose the following information is collected...Ch. 1 - One of the variables most often included in...Ch. 1 - If two students score a 90 on the same...
Ch. 1 - The director of market research at a large...Ch. 1 - The American Community Survey (www.census.gov/acs)...Ch. 1 - Visit the website of the Pew Research organization...Ch. 1 - Transportation engineers and planners want to...Ch. 1 - Visit the home page of the Statistics Portal...Ch. 1 - For a population containing N=902 individual, what...Ch. 1 - For a population of N=902, verify that by starting...Ch. 1 - Given a population of N=93, starting in row 29,...Ch. 1 - For a study that consists of personal interviews...Ch. 1 - You want to select a random sample of n=1 from a...Ch. 1 - A population has four members (called A, B, C, and...Ch. 1 - The registrar of a university with a population of...Ch. 1 - Prenumbered sales invoices are kept in a sales...Ch. 1 - Suppose that 10,000 customers in a retailer s...Ch. 1 - The cellphone brands owned by a sample of 20...Ch. 1 - The amount of monthly data usage by a sample of 10...Ch. 1 - An amusement park company owns three hotels on an...Ch. 1 - A hotel management company runs 10 hotels in a...Ch. 1 - A Survey indicates that the vast majority of...Ch. 1 - A simple random sample of n=300 full–time...Ch. 1 - Results of a 2017 Computer Service, Inc (CSI)...Ch. 1 - A recent PWC survey of 1,379 CEO s from a wide...Ch. 1 - A recent survey points to tremendous revenue...Ch. 1 - What is the difference between a sample and a...Ch. 1 - What is the difference between a statistic and...Ch. 1 - What is the difference between a categorical...Ch. 1 - What is the difference between a discrete...Ch. 1 - What is the difference between a nominal scaled...Ch. 1 - What is difference between an interval scaled...Ch. 1 - What is the difference between probability...Ch. 1 - What is difference between a missing value and an...Ch. 1 - What is the difference between unstack and stacked...Ch. 1 - What is the difference between coverage error and...Ch. 1 - What is the difference between sampling error and...Ch. 1 - Visit the official website for Microsoft Excel,...Ch. 1 - Results of a 2017 Computer Services, Inc (CSI)...Ch. 1 - The Gallup organization releases the results of...Ch. 1 - A recent PwC survey of 1,379 CEOs from a wide...Ch. 1 - The American community Survey (www.census.gov/acs)...Ch. 1 - Download and examine Zarca interactive’s Sample...Ch. 1 - Three professors examined awareness of four widely...Ch. 1 - Social media provides an enormous amount of data...
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