13. Two different companies are developing their own IQ tests. A psychologist by the instrumentality of them tests 8 randomly selected students. Student 1 2 3 4 5 6 7 8 Test 1 98 94 111 102 108 105 92 88 Test 2 105 95 113 98 1 12 109 97 95 1 ) Construct 95% confidence interval to estimate average difference of results. 2) Using p-values check the statement that the results of the 2" test results exceed the 1$ more than 2 units. 10%