Does this data provide evidence that the new machine is

Reference no: EM13631944

The manager of a soda bottling plant is interested in comparing the performance of two bottling machines, the old machine and a new machine that has just been purchased. For each machine she selects 10 one-hour periods at random and records the number of crates of bottles completed in each hour. The table below gives the results.

New	82	82	81	79	82	81	79	82	82	82
Old	77	79	79	75	78	75	78	78	84	77

(a) Does this data provide evidence that the new machine is faster than the old machine? (Give details.)

(b) Find a 90% confidence interval for the difference between the two means.

Reference no: EM13631944

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