A researcher collected information on a sample of male and female patients. She wanted to test whether there was a difference in the mean pulse between male and female patients. She uses SPSS to conduct the analysis. The SPSS results are shown below. Levene's Test for Equality of Variances +-test for Equality of Means 95% Confidence Interval of the Mean Sid. Error Difference Sig df Sig. (2-tailed) Difference Difference Lower Upper PULSE Equal variances 1.609 206 -3.233 298 001 -4.459 1.379 -7.173 -1.745 assumed Equal variances not -3.227 292.176 001 -4.459 1.382 -7.179 -1.739 assumed Answer the following: 1. Write out the null and alternative hypotheses. 2. What type of test is the appropriate test and explain why it is the appropriate test. 3. Using a level of significance for 0.05, what is your decision about the null hypothesis and what is the conclusion? Note: p-value in the SPSS output is labeled "sig" (2-tailed). (use equal variances not assumed)