The probability of contamination in batch 1 of a drug (event a) is 0.16, and the probability of contamination in batch 2 of the drug (event b) is 0.09. the probability of contamination in batch 2, given that there was a contamination in batch 1, is 0.12. given this information, which statement is true? a. events a and b are independent because p(b|a) = p(a). b. events a and b are independent because p(a|b) ≠ p(a). c. events a and b are not independent because p(b|a) ≠ p(b). d. events a and b are not independent because p(a|b) = p(a).

Right option is C. Events A and B are not independent because P(B|A) ≠ P(B).

Step-by-step explanation:

We have given,

Probability of contamination in batch 1 of a drug (event A) ,P(A) =  0.16

Probability of contamination in batch 2 of the drug (event B), P(B) = 0.09

Also,

Probability of contamination in batch 2, given that there was a contamination in batch 1, P(B/A) = 0.12

Since P(B/A) ≠ P(B), Therefore events A and B are not independent events.

Right option is C. Events A and B are not independent because P(B|A) ≠ P(B).

if gloria has "carry over" minutes, (that is, any minutes paid for but not used in a month can be applied to her payment for minutes in the next month,) her total usage for the three months is: total minutes = 320 + 243 + 489 = 1052 minutes number of 200 minute blocks = 1052/200 = 5 r52 (that is 5 with a remainder of 52) rounding up the number of 200 minute blocks gives her usage for the three months as 6 blocks. the cost for six blocks is 6 x $25 = $150 she also has 200 - 52 or 148 carry over minutes if gloria pays each month and unused minutes are lost, applying the rounding up procedure to each month gives: first month usage of 320 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 second month usage of 243 minutes rounds up to 2 blocks of 200 minutes for a payment of 2 x $25 = $50 third month usage of 489 minutes rounds up to 3 blocks of 200 minutes for a payment of 3 x $25 = $75 total payments for the three months are $50 + $50 + $75 = $175 get the plan with carry over minutes!

answer: 30

step-by-step explanation: its 30 because im a basketball player and stephen curry hits most of his shots so if you put 30 you might make the shot goodluck