The data below are lab report scores for a group of science students in a University chemistry class. They performed two different experiments ...

     The data below are lab report scores for a group of science   students in a University chemistry class. They performed two different   experiments on two different days. We will perform a two-sample hypothesis   test on this data. To do this, you must enter the data in both columns into   an Excel spreadsheet that you have previously installed Megastat as add-in.       Lab 1 Lab 2   15 13.95   15 13.5   14.3 9   14.3 14.3   14.7 14.4   13.5 15   14.3 14.3   14.9 14.3   14.3 13.7   15 14.3   15 14.9   15 14.4   15 14.85   12.5 15   14.7 14.7   15 12.75   15 14.25   12.75 13.5   14.25 13.5   14.25 13.5   14.4 13.25    

     From Megastat perform   a hypothesis test (by selecting hypothesis test) then comparison of two   independent groups. Make sure data input is checked. Place the cursor inside   Group 1, then go to the data and scroll from top to bottom for Lab 1 results   including the heading. Next, place the cursor inside Group 2 and go to the   data and scroll from top to bottom of Lab 2 results including the heading.   The hypothesized difference must be zero, and for alternative, select greater   than. Check z-test. Then click OK.   Based on the output, can we conclude at   the 5% level of significance that the students performed better on one   experiment than the other?   Explain the difference between one-sample   hypothesis and two-sample hypothesis testing. In this exercise how did you   formulate the null and alternate hypothesis? What is the importance of   rejecting the null hypothesis in relation to a two-sample hypothesis test?