Mathematics, 27.04.2021 22:10, crzyemo865
For the 1,000-meter running event, Abby’s meantime is 4.5 minutes with a standard deviation of 0.75 minutes. For the 800-meter event, Abby’s meantime is 3.2 minutes with a standard deviation of 0.4 minutes. In the last track meet, Abby ran the 1,000-meter race in 4.1 minutes and the 800-meter race in 3 minutes. In which event did Abby have a better performance?
A. Abby had a better performance in the 1,000-meter because this z-score was closer to the mean than the z-score for the 800-meter.
B. Abby had a better performance in the 800-meter because this z-score was closer to the mean than the z-score for the 1,000-meter.
C. Abby had a better performance in the 1,000-meter because this z-score was farther below the mean than the z-score for the 800-meter.
D. Abby had a better performance in the 800-meter because this z-score was farther below the mean than the z-score for the 1,000-meter.
Answers: 3
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 15:30, sydneyglover302
What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm
Answers: 1
Mathematics, 22.06.2019 03:30, Madeline6117
Jessa bought a yoyo from a company that claims that, with each retraction, the string rolls up by 60% of the original length. she sets up a tape measure and throws the yoyo 3 times. her data are charted below. throw length of string (feet) 1 3 2 1.8 3 1.08 jessa wants to find the sum of the length of string after 10 throws. what is the sum of the lengths, rounded to the nearest hundredth?
Answers: 3
Mathematics, 22.06.2019 04:00, Paulalex8765
For what values of a is the sum of the fractions 2a−1 / 4 and a−1 /3 positive?
Answers: 2
Do you know the correct answer?
For the 1,000-meter running event, Abby’s meantime is 4.5 minutes with a standard deviation of 0.75...
Questions in other subjects:
Biology, 02.09.2019 13:10
Biology, 02.09.2019 13:10
History, 02.09.2019 13:10
Biology, 02.09.2019 13:10
World Languages, 02.09.2019 13:10
