A sample of 25 measurements on a normally distributed quality characteristic has a mean of 85 and a standard deviation of 1. Usi
1 answer:
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Answer:
Machine B
Step-by-step explanation:
Since, Machine A covers square feet in
hours,
Rate at which the Machine A is covering =
=
= 2.5 square feet per hour
Machine B covers square feet in
hours,
Rate at which the Machine B is covering =
=
=
= 3.33 square feet per hour
Therefore, Rate of Machine B is greater.