STAT 200 Week 5 Homework Problems

Stephen Stigler determined in 1977 that the speed of light is 299,710.5 km/sec. In 1882, Albert Michelson had collected measurements on the speed of light ("Student t-distribution," 2013). Is there evidence to show that Michelson’s data is different from Stigler’s value of the speed of light? State the random variable, population parameter, and hypotheses. Random Variable = Speed of light. Population parameter = mean speed of light by Albert Michelson = μ299,710.5 km/sec μ=299,710.5 km/sec μ299,710.5 lm/sec Null Hypothesis = Ho = μ = 299,710.5 km/sec Alternate Hypothesis = Ha = μ299,710.5 km/sec 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.