Question: A mining company conducted a safety analysis for workers at a Saskatchewan site. Of 450 sample records in January, 16 revealed undesirable safety conditions. Of

A mining company conducted a safety analysis for workers at a Saskatchewan site. Of 450 sample records in January, 16 revealed undesirable safety conditions. Of 660 sample records in February/March, 10 showed undesirable conditions. Is there sufficient sample evidence to support the site manager's claim, at the 0.02 level of significance, that safety conditions improved between the two sample periods?

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