The owner of Weber Chocolates is considering the new machine to make their signature chocolate covered cherry. The present technique, hand dipping each cherry takes on average 41.1 seconds to dip and box dozen cherries. Using the new machine on loan from salesman to assemble the next 30 boxes they average 39.6 seconds per box. The standard deviation of sample was 2.4 seconds. Using a 0.05 significance level.
Can you prove that the new machine is faster than hand dipping technique?
What is your null hypothesis?
alternative hypothesis?
what tests statistic should you use
what is the calculated value of thest statistic
what is the citical value of the test statistic
what is your decision?
Can you prove that the new machine is faster than the hand dipping method?
Interpret your results: