You are a track coach and averaged the time for all track athletes in the 100 meter dash. The average time for all athletes was 10.87 seconds. You are teaching a new way of starting you believe will result in faster times. In a sample of 65 athletes that you teach the new method you find an average time of 10. 56 seconds with a standard deviation of .12 seconds Did the new method result in faster times?
You are a track coach and averaged the time for all track athletes in the 100 meter dash. The average time for all athletes was 10.87 seconds. You are teaching a new way of starting you believe will result in faster times. In a sample of 65 athletes that you teach the new method you find an average time of 10. 56 seconds with a standard deviation of .12 seconds Did the new method result in faster times?
You work in a bottling plant that produces an average of 7000 bottles a day. A software company believes their equipment will result in an increase in productivity. In a sample of 50 workers that use the new software they produce an average of 7010 bottles per day with an average deviation of 7 bottles. Did the new software increase production?
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