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OpenStudy (anonymous):
a sample of 350 orders for take-out food at local pizzeria found that the average cost of an order was $23 with s= $16 (a)find the margin of error, if we use 95% confidenceinterval, for the average cost if an order. (b) interpret for management the margin of error. (c) if we need to be 99% confident, does the confidence interval become wider or narrower (d) find the 99% confidence interval
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OpenStudy (anonymous):
@welshfella
OpenStudy (welshfella):
sorry - i've forgotten this stuff
OpenStudy (anonymous):
im so lost
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