Let x denote the number of canon slr cameras sold during a particular week by a certain store. the pmf of x is

x | 0 1 2 3 4
px(x) | 0.1 0.2 0.3 0.25 0.15

seventy percent of all customers who purchase these cameras also buy an extended warranty. let y denote the number of purchasers during this week who buy an extended warranty.

a) what is p(x= 4, y= 2)?
b) calculatep(x=y).
c) determine the joint pmf ofxandy formula
d) determine the marginal pmf ofyas a table.

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

susie has 7 apples