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In 1970, 36% of first year college students thought that being very well off financially is very important or essential. by 2000 the percentage had increased up to 74%. these percentages are based on nationwide multistage cluster samples.
a) Is the difference important? or does the question make sense?
b) Does it make sense to ask if the difference is statisically significant? can you answer on the basis of the informations given?
c) repeat b), assuming the percentages are based on independant simple random samples of 1,000 first year college students drawn each year.
Access the University of Phoenix Material, "Data for Inferential Practice Problems." Use the Excel® Analysis ToolPak? when necessary for the following:
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