sarah192002
20.07.2019 •
Mathematics
Three workers at a fast food restaurant pack the take-out chicken dinners. john packs 45% of the dinners, mary packs 25% of the dinners and sue packs the remaining dinners. of the dinners john packs 4% do not include a salt packet. if mary packs the dinner 2% of the time the salt is omitted. lastly, 3% of the dinners do not include salt if sue does the packing. if you find there is not salt in your purchased dinner what is the probability that mary packed your dinner?
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Ответ:
0.5625
Step-by-step explanation:
If John packed the dinner
probability of salt less dinner==0.018
If Mary packed the dinner
probability of salt-less dinner ==0.005
If sue packed the dinner
probability of salt-less dinner ==0.009
Total proportion of salt-less dinner=0.032
probability that dinner is salt-less and mary packed it==0.5625
Ответ:
160/3 got it on the ed thing