For a physical exam to qualify for company-provided insurance, 14 employees had their blood pressure measured. Their
Question:
For a physical exam to qualify for company-provided insurance, 14 employees had their blood pressure measured. Their systolic and diastolic BP are given here:
SBP DBP
140.....................................90
208...................................114
140.....................................90
164...................................104
142.....................................88
124.....................................82
120.....................................80
142.....................................72
160.....................................90
142.....................................98
225...................................125
140.....................................90
220...................................114
150.....................................85
A regression, found with technology, reports an R2 of 81.3%.
a) Make a scatterplot of the data. Is it appropriate to interpret correlation?
b) State the null and alternative hypotheses about the correlation.
c) Calculate the test statistic.
d) Perform the test at α = 0.01 and state your conclusion.
Step by Step Answer:
Business Statistics
ISBN: 9780133899122
3rd Canadian Edition
Authors: Norean D. Sharpe, Richard D. De Veaux, Paul F. Velleman, David Wright