Mathematics, 23.04.2021 03:40 Aurionna101
Keenan scored 80 points on an exam that had a mean score of 77 points and a standard deviation of 4.9 points. Rachel scored 78 points on an exam that had a mean score of 75 points and a standard deviation of 3.7 points.
It is meaningless to compare Keenan’s and Rachel’s scores directly, because they each took a different exam. Which of the following describes a valid way to use statistics to compare Keenan’s score on his exam with Rachel’s score on her exam?
Group of answer choices
Keenan did equally as well as Rachel because each of them scored 3 points above the mean for their exam.
Keenan did better than Rachel because his exam had a greater standard deviation than Rachel's had.
Rachel did better than Keenan because her z-score was greater than Keenan's.
Rachel did better than Keenan because the mean for her exam was less than the mean for Keenan's exam.
Answers: 1
Mathematics, 21.06.2019 14:00
Find parametric equations for the line. (enter your answers as a comma-separated list of equations. let x, y, and z be functions of t.) the line in the direction of the vector 5 i + 5 j − 6k and through the point (−4, 4, −2).
Answers: 1
Mathematics, 21.06.2019 15:00
Ricardo ran the 400 meter race 3 times his fastest time was 54.3 seconds his slowest time was 56.1 seconds if his average time was 55.0 seconds what was his time for the third race
Answers: 2
Mathematics, 21.06.2019 21:00
Which expressions are equivalent to -7+3(-4e-3)? choose all answers that apply: choose all answers that apply: a -4(3e+4)? 4(3e+4) b 12e12e c none of the above
Answers: 2
Keenan scored 80 points on an exam that had a mean score of 77 points and a standard deviation of 4....
Mathematics, 05.02.2020 00:43
Chemistry, 05.02.2020 00:43
Biology, 05.02.2020 00:43
English, 05.02.2020 00:43
Geography, 05.02.2020 00:43
History, 05.02.2020 00:43
Mathematics, 05.02.2020 00:43
History, 05.02.2020 00:43
Physics, 05.02.2020 00:44
English, 05.02.2020 00:44
Mathematics, 05.02.2020 00:44