Team FRNA is helping Centralia College by measuring the blood pressure of students.
They want to know if the mean systolic pressure is within the ideal range of 90-119. So they are
testing if the population mean systolic blood pressure is above 119.
* What hypothesis test and/or confidence interval can you use for this?
Single-sample t-test
One sample proportion test (Chi-square test)
Chi-square goodness-of-fit test
Two-sample t-test
Paired t-test
One-way ANOVA
Repeated-measures ANOVA
Multi-way ANOVA
Test for Pearson's correlation
Linear regression
Create two-way table and compare two proportions (z-test or chi-square test of independence)
* What are the main assumptions of the test and/or CI?
All individuals being studied are independent of each other
Either the outcome variable is normally distributed OR n is large (rule of thumb: n ≥ 30 for each
group) OR both
For each group i, n;* Pi (the expected frequency) is large (rule of thumb: np ≥ 5 for every group)
All the variables must all be approximately normally distributed
The outcome variable y must all be approximately normally distributed, but the explanatory variable
x does not need to be normal
There are no extreme outliers or influential points
The x-y relationship is linear
Variance is similar for all levels of the input variable
