- DQ 2 Consider Mary's experiment regarding whether learning of 6th graders on a math lesson is affected by background noise level. Mary has collected her data. What is the null hypothesis for her study? What is the alternative hypothesis for her study? W

- DQ 2

Consider Mary's experiment   regarding whether learning of 6th graders on a math lesson is affected by   background noise level. Mary has collected her data. What is the null   hypothesis for her study? What is the alternative hypothesis for her study?   What are the assumptions that must be met about her data before she can   correctly use an independent t-test to test the hypotheses? Why? How would   she see if her data met these assumptions? How much room does she have to   violate any of these assumptions and still get accurate results from the   t-test? Explain and support your answers.