Question
the following are the average weekly losses of worker-hours due to accidents in 10 industrial plants...
the following are the average weekly losses of worker-hours due to accidents in 10 industrial plants before and after a certain safety program was put into operation:
BEFORE
plant 1: 45
plant 2: 73
plant 3: 46
plant 4: 124
plant 5: 33
plant 6: 57
plant 7: 83
plant 8: 34
plant 9: 26
plant 10: 17
AFTER
plant 1: 36
plant 2: 60
plant 3: 44
plant 4: 119
plant 5: 35
plant 6: 51
plant 7: 77
plant 8: 29
plant 9: 24
plant 10: 11
conduct a paired t test to analyze this problem. use the 0.05 level of significant to test whether the safety program is effective.
the t statistic for this test is _____
the number of degrees of freedom for this test is ____
IS STATEMENT BELOW TRUE or FALSE? __________
the null hypothesis must be rejected at level alpha = 0.05. we conclude that the industrial safety program is effective. the evidence is strong since a computer calculation gives the p value = 0.9985.
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