3 monday september 23 2019 how do consumers feel

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Monday, September 23, 2019
How do consumers feel about using the Internet for online shopping? To find
out, United Parcel Service (UPS) commissioned a nationwide survey of 5,118
U.S. adults who had conducted at least two online transactions in 2015. One
finding from the study is that 74% of online shoppers have used a smartphone
to do their shopping.
a. Identify the data-collection method.
b. Identify the target population.
c. Are the sample data representative of the population?
Chapter 2
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2.1: You’re an analyst for IRI. You want to show the market shares held by Web
browsers in 2016. Construct a bar graph, pie chart, & Pareto diagram to
describe the data.
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Browser: Mkt. Share (%):
Firefox 14
Internet Explorer 81
Safari 04
Others 01

Monday, September 23, 2019
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2.3: Calculate the mean of the following six sample measurements: 10.3, 4.9, 8.9,
11.7, 6.3, 7.7
You’re a financial analyst for Prudential-Bache Securities. You have collected the
following closing stock prices of new stock issues: 17, 16, 21, 18, 13, 16, 12,
11. Describe the stock prices in terms of central tendency
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2.4: Calculate the variance and standard deviation. 10.3, 4.9, 8.9, 11.7, 6.3, 7.7
You’re a financial analyst for Prudential-Bache Securities. You have collected the
following closing stock prices of new stock issues: 17, 16, 21, 18, 13, 16, 12, 11.
What are the variance and standard deviation of the stock prices?
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2.5: Previously we found the mean closing stock price of new stock issues is 15.5
and the standard deviation is 3.34. Use this information to form an interval that
will contain at least 75% of the closing stock prices of new stock issues.
.