Mathematics, 16.07.2019 21:30 angelteddy033
To estimate the mean score of those who took the medical college admission test on your campus, you will obtain the scores of an srs of students. from published information you know that the scores are approximately normal with standard deviation about 6.5 . you want your sample mean ¯ to estimate with an error of no more than 1.4 point in either direction. (a) what standard deviation must ¯ have so that 99.7% of all samples give an ¯ within 1.4 point of ? use the 68–95–99.7 rule. (enter your answer rounded to four decimal places.) standard deviation of ¯= (b) how large an srs do you need in order to reduce the standard deviation of ¯ to the value you found? (enter your answer rounded to the nearest whole number.) srs size =
Answers: 2
Mathematics, 21.06.2019 21:00, 22MadisonT
Abakery recorded the number of muffins and bagels it sold for a seven day period. for the data presented, what does the value of 51 summarize? a) mean of bagels b) mean of muffins c) range of bagels d) range of muffins sample # 1 2 3 4 5 6 7 muffins 61 20 32 58 62 61 56 bagels 34 45 43 42 46 72 75
Answers: 2
Mathematics, 21.06.2019 21:00, millie54
Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?
Answers: 2
To estimate the mean score of those who took the medical college admission test on your campus, you...
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