Back to Content Interim Checkpoint: Algebra 2 Checkpoint 4 - Part 1
A random number generator that returns an integer is run twice. The notation for conditional probability is
P (even on 2nd runſodd on 1st run)
Which notation is the probability of the two events being independent?

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.