The test scores of 40 students are summarized in the frequency distribution below. Find the mean score.Score students50-59= XXXXXXXXXX=670-79=780-89=790-99=7The test scores of 40 students are listed...

The test scores of 40 students are summarized in the frequency distribution below. Find the mean score.Score students50-59= 1360-69=670-79=780-89=790-99=7The test scores of 40 students are listed below. Find P56.30 35 43 44 47 48 54 55 56 5759 62 63 65 66 68 69 69 71 7272 73 74 76 77 77 78 79 80 818...