Mathematics, 20.05.2021 14:00 luiggie
There is a bag filled with 5 blue and 4 red marbles.
A marble is taken at random from the bag, the colour is noted and then it is replaced.
Another marble is taken at random.
What is the probability of getting 2 blues?
Answers: 1
Mathematics, 21.06.2019 19:00
Ab based on the given diagram, if m_1 = 60° then m 2 = 30 60 90 180
Answers: 1
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
There is a bag filled with 5 blue and 4 red marbles.
A marble is taken at random from the bag, the...
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