What mistake did Raul make?
He subtracted the values instead of adding
them.
He did not add the corresponding parts of the
complex numbers.
He found the sum instead of the average
because he forgot to divide by two.
He added the numbers in the wrong order.

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions

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.

Select the correct answer and solve for y