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 meet
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.
250 Words plus reference. Use the first question to complete this one.