(Answered) Question two machines filling bottles of shampoo one

Statistics

Question: Two machines filling bottles of shampoo. One machine had a mean of 500 ml, SD 10 ml, the other a mean of 750 ml, SD 15 ml. For each machine calculate the lower and upper amounts (in ml) between which:

(a) 90 per cent of all output will fall

(b) 95 per cent of all output will fall

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