Mathematics, 20.09.2020 15:01 joshuahinton45
Reaction times Catherine and Ana wanted to know if student athletes (students on at least one varsity team) have faster reaction times than non-athletes. They took separate random samples of 33 athletes and 30 non-athletes from their school and tested their reaction time using an online reaction test, which measured the time (in seconds) between when a green light went on and the subject pressed a key on the computer keyboard. A 95% confidence interval for the difference (Non-athlete Athlete) in the mean reaction time was 0.018 ± 0.034 seconds. Does the interval provide convincing evidence of a dif. ference in the true mean reaction time of athletes and non-athletes? Explain your answer. (a) (b) Does the interval provide convincing evidence that the true mean reaction time of athletes and non-athletes is the same? Explain your answer.
Answers: 3
Mathematics, 21.06.2019 23:20
Point r divides in the ratio 1 : 5. if the coordinates of e and f are (4, 8) and (11, 4), respectively, what are the coordinates of r to two decimal places?
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Here are the 30 best lifetime baseball batting averages of all time, arranged in order from lowest to highest: 0.319, 0.329, 0.330, 0.331, 0.331, 0.333, 0.333, 0.333, 0.334, 0.334, 0.334, 0.336, 0.337, 0.338, 0.338, 0.338, 0.340, 0.340, 0.341, 0.341, 0.342, 0.342, 0.342, 0.344, 0.344, 0.345, 0.346, 0.349, 0.358, 0.366 if you were to build a histogram of these data, which of the following would be the best choice of classes?
Answers: 3
Reaction times Catherine and Ana wanted to know if student athletes (students on at least one varsit...
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