A survey of random sample of people leaving an amusement

Reference no: EM13240448

A survey of random sample of people leaving an amusement park showed an average expenditure number 10.30k for the evening, the average of expenditure for the 20 girls in the sample was number 9.70k and for the bpys it was number 11.10k. how many boys are in the random sample ?

Reference no: EM13240448

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