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Mathematics, 13.04.2021 01:20 loki285
A researcher in the field of sports biomechanics believes he has found the "ideal" running posture for sprinters. He selects a random sample of 12 high school track sprinters and records their best 200 m time (in seconds). Then he trains these sprinters over several days to run using his proposed "ideal" posture. In the days after the training ends, these sprinters run several 200 m races, and the researcher records their best performance from this time period. The before-training and after-training times (in seconds) are given below. Use the sign test to test the claim that the proposed ideal running posture is effective (i. e. the median of the "before – after" differences is positive). Use a 0.05 level of significance. Identify the value of the TEST STATISTIC used in a hypothesis test of the claim.
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Mathematics, 21.06.2019 20:00
In one day there are too high tides into low tides and equally spaced intervals the high tide is observed to be 6 feet above the average sea level after six hours passed a low tide occurs at 6 feet below the average sea level in this task you will model this occurrence using a trigonometric function by using x as a measurement of time assume the first high tide occurs at x=0. a. what are the independent and dependent variables? b. determine these key features of the function that models the tide: 1.amplitude 2.period 3.frequency 4.midline 5.vertical shift 6.phase shift c. create a trigonometric function that models the ocean tide for a period of 12 hours. d.what is the height of the tide after 93 hours?
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A researcher in the field of sports biomechanics believes he has found the "ideal" running posture f...
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