Researchers want to examine whether or not there is a difference in birthweight for mothers who smoke and mothers who do not smoke. Their alternate hypothesis is Ha: μ1 ≠ μ2.They collect smoking status and birthweight information for 189 pregnancies. For your convenience, I have prepared an Excel file with the data titled: data_final_smoking_bw. xlsx. Preview the document Use a t-test to test the hypothesis that there is a difference in birthweight for mothers who smoke and mothers who do not smoke at the α = 0.05 level. Assume unequal variance between the groups. What is the p-value for this result?