2. Do quarterbacks have a greater Ability to complete passes when the weather is warm? To investigate, you compare the pass completion percentages for Donovan McNabb in games 50 degrees or warmer and in games under 50 degrees. State the null and
alternative hypotheses for investigating this claim.

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11. minitab software was used to find the lsrl for a study between x=age and y=days after arthroscopic shoulder surgery until an athlete could return to their sport. use the output to determine the prediction model and correlation between these two variables. predictor coef se coef t p constant -5.054 4.355 -1.16 0.279 age 0.2715 0.1427 1.9 0.094 r-sq = 31.16%

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