1) A consumer advocacy group wants to determine whether there is a (statisticall

1) A consumer advocacy group wants to determine whether there is a (statistically significant) difference between the proportions of the two leading motorcycle models that need major repairs within 2 years of purchase. A major repair is defined as more than $500. A sample of 520 owners of the Model A is contacted and 85 owners indicated that their vehicles needed major repairs within 2 years. A sample of 610 owners of Model B is contacted and 108 owners indicated that their vehicles needed major repairs within 2 years.Test the null hypothesis that no difference exists between the proportions in populations A and B needing major repairs against the alternative hypothesis that a difference does exist. Use = 0.01.Be sure to write out the conditions for each step of the hypothesis testing procedure:

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