A five-card hand is dealt from a deck of standard cards. Which expression represents the calculation for the expected number of face cards? a) (5X12)/52
b) 52/(5X12)
c) (12X52)/5
d) (5X52)/12

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Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample