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QUESTION 1 1) In a statistical experiment, you are required to compare the means of two independent populations. Further you learned that the standard deviations of the two populations are unknown. Which of the following statistical test should be used for this situation? O a. z test O b. Chi-Square test O c. t-test O d. F test QUESTION 2 2) You are testing whether there is no difference between two population means for two normally distributed populations. Which is the correct null hypothesis if μ1 is the mean of first population and µ2 is the mean of the second population? Ⓒa. H1-H2> 0 Ob. H1-H2 <0 OCH1-H20 Od. H1-H2=0 5 points 5 points Save Answer Save Answer