Help with statistics homework

timer Asked: Sep 12th, 2015

Question description

A Bloomberg Businessweek North American subscriber study collected data from a sample of 2861 subscribers. Fifty-nine percent of the respondents indicated an annual income of $ 75,000 or more, and 50 % reported having an American Express credit card. 

a. What is the population of interest in this study?

1. American Express credit card hold

2. Businessweek North American subscribers

b. Is annual income a categorical or quantitative variable? 

c.Does this study involve cross-sectional or time series data?

d.Determine whether the following two statistical inferences may be made based on the sample data collected 

An estimated 59% of the population of subscribers has an annual income of $ 75,000 or more 

a. the datd support this inference 

b. the data do not support this inference 

An estimated 60% of the population of subscribers has an American Express credit card 

a.the data support this inference 

b.the data do not support this inference 

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