The table below gives the scores for test 1 and for test 2 for 8 randomly selected students.   Student Test 1 Test 2 A 82 85 B 92 90 C 86 85 D 85 75 E 91 75 F 80 88 G 88 90 H 94 88   At α =0.05, test the claim that there is no difference between the scores. A.   Determine the test statistic.   B.  Determine the critical value.

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.