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10.43 According to published reports, practice under fatigued conditions distorts mechanisms that govern performance. An experiment was conducted using 15 college males, who were trained to make a continuous horizontal right-to-left arm movement from a microswitch to a barrier, knocking over the barrier coincident with the arrival of a clock sweephand to the 6 o'clock position. The absolute value of the difference between the time, in milliseconds, that it took to knock over the barrier and the time for the sweephand to reach the 6 o'clock position (500 msec) was recorded. Each participant performed the task five times under prefatigue and postfatigue conditions, and the sums of the absolute differences for the five performances were recorded. Absolute Time Differences Subject Prefatigue Postfatigue 1 158 91 2 92 59 3 65 215 4 98 226 5 33 223 6 89 91 7 148 92 8 58 177 9 142 134 10 117 116 11 74 153 12 66 219 13 109 143 14 57 164 15 85 100 An increase in the mean absolute time difference when the task is performed under postfatigue conditions would support the claim that practice under fatigued conditions distorts mechanisms that govern performance. Assuming the populations to be normally distributed, test this claim.

          10.43 According to published reports, practice under fatigued conditions distorts mechanisms that govern performance. An experiment was conducted using 15 college males, who were trained to make a continuous horizontal right-to-left arm movement from a microswitch to a barrier, knocking over the barrier coincident with the arrival of a clock sweephand to the 6 o'clock position. The absolute value of the difference between the time, in milliseconds, that it took to knock over the barrier and the time for the sweephand to reach the 6 o'clock position (500 msec) was recorded. Each participant performed the task five times under prefatigue and postfatigue conditions, and the sums of the absolute differences for the five performances were recorded.
Absolute Time Differences
Subject Prefatigue Postfatigue
1 158 91
2 92 59
3 65 215
4 98 226
5 33 223
6 89 91
7 148 92
8 58 177
9 142 134
10 117 116
11 74 153
12 66 219
13 109 143
14 57 164
15 85 100
An increase in the mean absolute time difference when the task is performed under postfatigue conditions would support the claim that practice under fatigued conditions distorts mechanisms that govern performance. Assuming the populations to be normally distributed, test this claim.

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10.43 According to published reports, practice under fatigued conditions distorts mechanisms that govern performance. An experiment was conducted using 15 college males, who were trained to make a continuous horizontal right-to-left arm movement from a microswitch to a barrier, knocking over the barrier coincident with the arrival of a clock sweephand to the 6 o'clock position. The absolute value of the difference between the time, in milliseconds, that it took to knock over the barrier and the time for the sweephand to reach the 6 o'clock position (500 msec) was recorded. Each participant performed the task five times under prefatigue and postfatigue conditions, and the sums of the absolute differences for the five performances were recorded.
Absolute Time Differences
Subject Prefatigue Postfatigue
1 158 91
2 92 59
3 65 215
4 98 226
5 33 223
6 89 91
7 148 92
8 58 177
9 142 134
10 117 116
11 74 153
12 66 219
13 109 143
14 57 164
15 85 100
An increase in the mean absolute time difference when the task is performed under postfatigue conditions would support the claim that practice under fatigued conditions distorts mechanisms that govern performance. Assuming the populations to be normally distributed, test this claim.

Added by Joshua C.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Adi S

08/11/2022

Step 1

The null hypothesis (H0) is that there is no difference in the mean absolute time differences between pre-fatigue and post-fatigue conditions. The alternative hypothesis (H1) is that the mean absolute time difference is greater under post-fatigue conditions than Show more…

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