Mathematics, 25.01.2020 06:31 Briannadavis03
Agrinding wheel manufacturer designed a new grinding wheel. repeated tests were conducted on wheels of approximately the same weight. the tests showed that the new wheel enables free-cutting steels to be cut on an average of 225 surface feet per minute (sfm) with a standard deviation of 16.5 sfm and that the cutting rates are approximately normally distributed. a) what is the 75th percentile of the distribution of cutting got 236.137 sfmb) what is the probability that at least 3 wheels out of 10 randomly selected wheels in the study will have a cutting rate that is greater than the cutting rate calculated in part (a)? c) what is the probability that a randomly selected sample of 5 wheels in the study will have a mean cutting rate of at least 225 sfm?
Answers: 3
Mathematics, 21.06.2019 14:30
Ineed asap.i cant understand this question i need someone to me right away
Answers: 3
Mathematics, 21.06.2019 20:00
Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?
Answers: 2
Mathematics, 21.06.2019 22:00
Solve 2 - 3 cos x = 5 + 3 cos x for 0° ≤ x ≤ 180° a. 150° b. 30° c. 60° d. 120°
Answers: 1
Agrinding wheel manufacturer designed a new grinding wheel. repeated tests were conducted on wheels...
Mathematics, 11.04.2021 07:00
Mathematics, 11.04.2021 07:00
Mathematics, 11.04.2021 07:00
Computers and Technology, 11.04.2021 07:00
Business, 11.04.2021 07:10
Mathematics, 11.04.2021 07:10
English, 11.04.2021 07:10
Mathematics, 11.04.2021 07:10