Hi,

Note: The probability of x successes in n trials is: 

P = nCx*  where p and q are the probabilities of success and failure respectively. 

In this case p = .10 and q = .90

P(exactly 2 out of 14 will have side effects):

P = 14C2 (.10)^2(.90)^12 = 81 *(.10)^2(.9)^12 = .257



P(at least three  will have side effects):

P = 1 - P(none) - P(one) - P(two) = 1- (.9)^14 - 17*(.1)^1(.9)^13 - 136*(.1)^2(.9)^12

P = 1 -.2288 - .3559 - .2570 = .1584 

RELATED QUESTIONS

5. In testing a new drug, researchers found that 5% of all patients using it will have a... (answered by stanbon)

how do i solve this In testing a new drug, researchers found that 5% of all patients... (answered by stanbon)

 In testing a new drug, researchers found that 5% of all patients using it will have a... (answered by stanbon)

5. In testing a new drug, researchers found that 5% of all patients using it will have a... (answered by stanbon)

In testing a new drug, researchers found that 1% of all patients using it will have a... (answered by edjones)

In testing a new drug, researchers found that 1% of all patients using it will have a... (answered by robertb)

In testing a new drug, researchers found that 5% of all patients using it will have a... (answered by stanbon)

In testing a new drug, researchers found that 5% of all patients using it will have a... (answered by stanbon)

In testing a new drug, researchers found that 1% of all patients using it will have a... (answered by stanbon)