A ng.cengage.com -tunities amid the COVID-19 pandemic: Per.. X Mind Tap - Cengage Learning b Answered: fill blanks | bartleby * CENGAGE MINDTAP Homework: Chapter 03 Central Tendency 5. Calculating the...

Extracted text: A ng.cengage.com -tunities amid the COVID-19 pandemic: Per.. X Mind Tap - Cengage Learning b Answered: fill blanks | bartleby * CENGAGE MINDTAP Homework: Chapter 03 Central Tendency 5. Calculating the mean when multiplying or dividing by a constant A school district is deciding whether or not to adopt a new math curriculum. Three classrooms are randomly selected as test sites for the curriculum. To obtain a measure of student improvement, students in the three classrooms are tested on their math skills before and after the curriculum is implemented. The math skills test has 25 possible points. The post-implementation scores for the students in the third classroom are shown in the following table: 19 13 16 18 15 14 17 8 20 19 22 11 Calculate the sample size, n; the total sum, EX; and the sample mean, M. n = ΣΧ- M = The school district decides it will be easier to understand the scores if they are converted to a 100-point scale. This requires that each score be multiplied by 4. Calculate the new n, EX, and M. n = ΣΧ- M = MacBook Air 80 DII DD F9 F10 F7 FB