Mathematics, 19.03.2020 00:10 genyjoannerubiera
Each year about 1500 students take the introductory statistics course at a large university. This year scores on the final exam are distributed with a median of 74 points, a mean of 70 points, and a standard deviation of 10 points. There are no students who scored above 100 (the maximum score attainable on the final) but a few students scored below 20 points. (a) Is the distribution of scores on this final exam symmetric, right skewed, or left skewed? (b) Would you expect most students to have scored above or below 70 points? (c) Can we calculate the probability that a randomly chosen student scored above 75 using the normal distribution? (d) What is the probability that the average score for a random sample of 40 students is above 75? (e) How would cutting the sample size in half affect the standard deviation of the mean?
Answers: 1
Mathematics, 21.06.2019 19:30
Consider a cube that has sides of length l. now consider putting the largest sphere you can inside this cube without any point on the sphere lying outside of the cube. the volume ratio -volume of the sphere/ volume of the cube is 1. 5.2 × 10−1 2. 3.8 × 10−1 3. 1.9 4. 2.5 × 10−1 5. 3.8
Answers: 2
Mathematics, 22.06.2019 01:00
On friday, there were x students at the baseball game. on monday, there were half as many students at the game as there were on friday. on wednesday, there were 32 fewer students at the game as there were on friday. which expression could represent the total number of tickets sold for all 3 games?
Answers: 2
Mathematics, 22.06.2019 04:50
Match each equation to the ordered pair that represents one of its solutions. 3x + 2y = 6 -5x + y = -10 x ? 4y = 8 -6x ? 5y = 30 ordered pair equation (0, -6) arrowboth (0, 3) arrowboth (4, -1) arrowboth (1, -5) arrowboth reset next unit 2 - pretest
Answers: 3
Each year about 1500 students take the introductory statistics course at a large university. This ye...
Mathematics, 03.11.2020 21:50
Mathematics, 03.11.2020 21:50
Social Studies, 03.11.2020 21:50
Mathematics, 03.11.2020 21:50
History, 03.11.2020 21:50
English, 03.11.2020 21:50
Computers and Technology, 03.11.2020 21:50