STAT 200 Week 5 Homework Problems.docx - Crystal Wold STAT 200 Week 5 Homework Problems 7.1.2 According to the February 2008 Federal Trade Commission

STAT 200 Week 5 Homework Problems.docx - Crystal Wold STAT...

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Crystal Wold STAT 200 Week 5 Homework Problems 7.1.2 According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 2007 were for identity theft. In that year, Alaska had 321 complaints of identity theft out of 1,432 consumer complaints ("Consumer fraud and," 2008). Does this data provide enough evidence to show that Alaska had a lower proportion of identity theft than 23%? State the random variable, population parameter, and hypotheses. Variable (x): Complaints of identity theft Population Parameter (p) : percentage of complaints Null Hypothesis: Ho= p=0.23 Alternate Hypothesis: Ha= p<0.23 7.1.6 According to the February 2008 Federal Trade Commission report on consumer fraud and identity theft, 23% of all complaints in 2007 were for identity theft. In that year, Alaska had 321 complaints of identity theft out of 1,432 consumer complaints ("Consumer fraud and," 2008). Does this data provide enough evidence to show that Alaska had a lower proportion of identity theft than 23%? State the type I and type II errors in this case, consequences of each error type for this situation, and the appropriate alpha level to use. Type I error indicates that complaints are less than 23% but are at 23% Type II error indicates complaints are 23% but are less than 23% Both errors could mislead the FTC, either not putting enough focus or too much focus on an area.
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