Question

The following are the average weekly losses of working hours due to accidents in 10 industrial plants before and after an introduction of a safety program were put into operation. B 45 73 46 124 33 57 83 34 26 17 A 36 60 44 119 35 51 77 29 24 11

Answer 1

Step-by-step explanation:

Here sample size: n = 10 Find the difference mean and standard deviation: plant Before After difference (d) 1 45 36 9 14.44 2 73 60 13 60.84 3 46 44 2 10.24…

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Answer 2

Answer:

Let put some notation

x= test value before and y=test value after

x= 45,73,46,124,33,57,83,34,26,17,

y= 36,60,44,119,35,51,77,29,24.

By using null hypotheses we get -5.2 is the answer.

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