Two players, Fredo and Karl, on different teams wanted to find out who scored the higher number of points when compared to the other players on his team. Player His Average Points Other's Average Points Other's Standard Deviation Fredo 167 187 20 Karl 175 199 20 Table 2.57 a. Which player had the higher average points when compared to the other players on his team? O Fredo O Karl b. Use Table 2.57 to find the value that is three standard deviations above the mean for each team. Enter the exact answers. Fredo's team: Number Karl's team: Number

CO LO Translate Mikayla and April began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Mikayla took a test in Science and earned a 78.6, and April took a test in English and earned a 61.3. Use the fact that all the students' test grades in the Science class had a mean of 75.6 and a standard deviation of 11.8, and all the students' test grades in English had a mean of 65.3 and a standard deviation of 9.6 to answer the following questions. a) Calculate the z-score for Mikayla's test grade. [Round your answer to two decimal places.] 三2 b) Calculate the z-score for April's test grade. [Round your answer to two decimal places,] 三2 c) Which person did relatively better? Mikayla O April O They did equally well. Submit Question 52°F Clou +56 五。 Or

Debbie scored 71 points on her history test. The mean was 65 points and the standard deviation was 3 points. Harry scored 85 points on his architecture test. The mean was 70 points and the standard deviation was 10 points. Who scored relatively better on their test?

On a certain exam, Tony corrected 10 papers and found the mean for his group to be 75. Alice corrected the remaining 20 papers and found that the mean for her group was 80. What is the mean of the combined group of students? (Round your answer to one decimal place.)