A 5-column table has 4 rows. The first column has entries A, B, C, Total. The second column is labeled X with entries 10, 110, 60, 180. The third column is labeled Y with entries 80, 44, 59, 183. The fourth column is labeled Z with entries 61, 126, 110, 297. The fifth column is labeled Total with entries 151, 280, 229, 660. Which statement is true about whether Z and B are independent events? Z and B are independent events because P(Z∣B) = P(Z). Z and B are independent events because P(Z∣B) = P(B). Z and B are not independent events because P(Z∣B) ≠ P(Z). Z and B are not independent events because P(Z∣B) ≠ P(B).

  Z and B are independent events because P(Z∣B) = P(Z)

Step-by-step explanation:

The attached spreadsheet shows that P(Z|B) = 45% = P(Z). Hence Z and B are independent.

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