Mathematics, 06.07.2019 15:00 dontcareanyonemo
13 times an unknown number added 72 equals -23 times the unknown number
Answers: 1
Mathematics, 21.06.2019 17:30
Mrs. morton has a special reward system for her class. when all her students behave well, she rewards them by putting 3 marbles into a marble jar. when the jar has 100 or more marbles, the students have a party. right now, the the jar has 24 marbles. how could mrs. morton reward the class in order for the students to have a party?
Answers: 3
Mathematics, 21.06.2019 19:40
Afactory makes propeller drive shafts for ships. a quality assurance engineer at the factory needs to estimate the true mean length of the shafts. she randomly selects four drive shafts made at the factory, measures their lengths, and finds their sample mean to be 1000 mm. the lengths are known to follow a normal distribution whose standard deviation is 2 mm. calculate a 95% confidence interval for the true mean length of the shafts. input your answers for the margin of error, lower bound, and upper bound.
Answers: 3
Mathematics, 21.06.2019 20:00
15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m
Answers: 1
13 times an unknown number added 72 equals -23 times the unknown number...
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