A second-stage smog alert has been called in a certain area ofLos Angeles County in which there are 50 industrial firms. Aninspector will visit 10 randomly selected firms to check forviolations of regulations. a. If 15 of the firms are actually violating at least oneregulation, what is the pmf of the number of firms visited by theinspector that are in violation of at least one regulation?b. If there are 500 firms in the area, of which 150 are inviolation, approximate the pmf of part (a) by a simpler pmf. c. For X=the number among the 10 visited that are inviolation, compute E(X) and V(X) both for the exact pmf and theapproximating pmf in part (b)

i dont know nkw

step-by-step explanation:

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answer: sine

step-by-step explanation:

total amount of money that he should pay if he has not used his duty free exemption is $98

step-by-step explanation:

given a united states citizen returning to the states declares the following items at the customs office: 3 shirts at $8.50 each 2 dresses at $27.50 each 1 pair of gold cuff links at $17.50 per pair. we have to find how much he pay

cost of 3 shirts if one cost at $8.50 is

cost of 2 dresses if one cost at $27.50 is  

cost of 1 pair of gold cuff at $17.50

so, total amount of money that he should pay if he has not used his duty free exemption is   $25.5+$55+$17.50=$98

c - they will have the same distribution

step-by-step explanation:

this is the only one that could make sense. : )