Question: For the question below, I'm confused in approaching it through which type of distribution I should use and the two distinct variables to find the

For the question below, I'm confused in approaching it through which type of distribution I should use and the two distinct variables to find the margin of error. How should I approach the question? Thank you!

A study is conducted to investigate whether people with glaucoma have higher than average blood pressure. The study includes 10 people with glaucoma whose mean systolic blood pressure (SBP) is 140 mm Hg with a sample standard deviation of 23 mm Hg.Assume that SBP has a normal distribution.What is themargin of errorfor a 90% confidence interval for the mean SBP for individuals with glaucoma?

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