A company produces products at a cost of $31 each. Defective products cost an additional $15 each to repair. The probability of no defective products is 80%. The probability of 5% defective products is 20%. What is the expected cost of producing 600 products?

Given f(x) = 2x^2- 5x+1, determine the function value f(2). do not f(x) = in your answer

What is the sum of these mixed numbers 2 1/8 + 4 3/8

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.