Safety incidents had been occurring every X ~ EXPO(8) days at your companies sit

Question

Safety incidents had been occurring every X ~ EXPO(8) days at your companies site (site A). This has been stable for some time now. A new safety program has been put in at identical sister company site (site B) which, from experience elsewhere, should provide a mean time between safety incidents of 15 days at the site. You collect 30 "time between incidents" observations each from site A and site B. Site A has X = 9.1 and Site B has X = 10.2. Does this appear reasonable given the assumptions above?

Explanation / Answer

Answer to the question)

No this is not at all reasonable , the reasons are as follows:

Thus these values of mean so obtained from the samples does not seem to be reliable.

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