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Adults have blood pressure is approximately normally distributed. In a study, a blood pressure mean of 113 mmHg with a standard deviation of 13 mmHg

Adults have blood pressure is approximately normally distributed. In a study, a blood pressure mean of 113 mmHg with a standard deviation of 13 mmHg was calculated for 50 non-smoking adults. An additional 50 adult smokers were tested and had a mean blood pressure of 124 mmHg and a standard deviation of 14 mm Hg.

  1. Is the mean blood pressure different for smokers and non-smokers at a 95% significance level? State your null and alternative hypothesis and show ALL work except for the calculation of any necessary descriptive statistics.

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