Solve the given problem using the stepwise method for testing hypotheses (correlated samples). Use t-test for correlated sample to test if there is no difference  between oral contraceptive use and blood pressure (before and after). Use .01 alpha level of significance ( two-tailed). BP Before OC            BP After OC 115                                128 112                                 115 107                                  106 119                                   128 115                                   122 138                                   145 126                                   132 105                                    109 104                                     102 115                                      117

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