You test a new drug to reduce blood pressure. A group of 15 patients with high blood pressure report the following systolic pressures (measured in mm Hg):
before medication: 187 120 151 143 160 168 181 197 133 128 130 195 130 147 193 (y)-157.53 (s)-27.409
after medication: 187 118 147 145 158 166 177 196 134 124 133 196 130 146 189 (y)-156.40 (s)-27.060
change: 0 2 4 -2 2 2 4 1 -1 4 -3 -1 0 1 4 (y)-1.133 (s)-2.295
a) Calculate a 90% CI for the change in blood pressure.
b) Calculate a 99% CI for the change in blood pressure.
c) Does either interval (the one you calculated in (a) or (b)) include 0? Why is this important?
d) By conducting a one sample t-test using μ = 0, and α = .10. Are the results consistent with (a)?
e) Finally, by conducting a one sample t-test using μ = 0, and α = .01. Are the results consistent with (b)?
Please explain how to proceed with the question please