a group of 5 statistics students recieved the following grades on a test 81, 74, 62, 92, and 76. an intervention plan is used and the students were...

a group of 5 statistics students recieved the following grades on a test81, 74, 62, 92, and 76. an intervention plan is used and the students were hopeful to increase their scores on a retest . they recieved the following grades in retest: 89, 78, 59, 98, and 75. at the 0.025 significance level, is the intervention plan helpful in increasing grades?a state null and alternative hypothesis b. state decision rule. c. compute value of the test statisticd. compute the p valuee. what is your decision regarding the null hypothesis? interpret the result