If systolic blood pressure (SBP) in the population is normally distributed with mean = 120 mm Hg and standard deviation = 15 mm Hg. a) If a sample of 38 people is selected, find the probability that the sample mean of SBP is higher than 139.5 mm Hg? b) Find the 60th percentile value of SBP?
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We have a sample size ($n$) of 38 people. We want to find the probability that the sample mean ($\bar{X}$) is higher than 139.5 mm Hg. Show more…
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In a certain population, systolic blood pressure (SBP) is assumed to be normally distributed with mean mu =μ = 120 mmHg and standard deviation = σ = 15 mmHg. SBP is assumed to be measured as a continuous variable. Suppose we choose one person at random from this population. What is the probability they would have SBP greater than 135 mmHg?
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