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- Find the positive geometric mean between 4 and 64.Find the mean hourly cost when the cell phone described above is used for 240 minutes.If the mean of your grades in 4 subjects in the first semester = 60 , and the mean of your grades in 6 subjects in the second semester = 50 , then your mean of grades =
- If your 1st Term Score in this class is 38.42, and your 2nd Term Score is 43.83, what score do you need in the 3rd Term so that your mean score is 60.25?Thirteen students entered the undergraduate business program at Rollins College 2 years ago. The following table indicates what their grade-point averages (GPAs) were after being in the program for 2 years and what each student scored on the SAT exam (maximum 2400) when he or she was in high school. Is there a meaningful relationship between grades and SAT scores? If a student scores a 1200 on the SAT, what do you think his or her GPA will be? What about a student who scores 2400? STUDENT SAT SCORE GPA A 1263 2.90 B 1131 2.93 C 1755 3.00 D 2070 3.45 E 1824 3.66 F 1170 2.88 G 1245 2.15 H 1443 2.53 I 2187 3.22 J 1503 1.99 K 1839 2.75 L 2127 3.90 M 1098 1.60One of the important statistics of interest to all 4-year colleges and Universities is student retention rate. It is defined as “the percentage of a school's first-time, first-year undergraduate students who continue at that school the next year”. A very small 4-year college in the Midwest claims to have a retention rate of 85% and admitted 60 Freshmen in Fall 2020. Assuming the claim is true: After doing some research, you find out that this college admitted 70 freshmen in Fall 2019 and 65 of them continued on to their second year in Fall 2020. Are you inclined to believe their 85%retention claim? Justify with appropriate calculations.
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