1.(25 pts total) Import the excel spreadsheet chol. Drug test Math.3850. In this data an intervention was made in the subjects in the before group to see if the levels

of LDL levels were decreased. a.) If we are comparing to see if there is a difference , please state our null and alternative hypothesis. b.) What type of hypothesis test will we perform for the above? c.) For part a, and at level of significance a= 0.02, do we reject or fail to reject our null hypothesis. Please show SPSS output (or similar output). Please explain using our p-value.