98% of dr. williams patients end up with 20-30 vision or better. find the probability that exactly 4 of her next 6 patients end up with 20-30 vision or better.

0.1095

Step-by-step explanation:

Data:

Let:

probability of patients getting well = 0.98

The number of patients. n = 4

The variables are independent, therefore, n = 6

The probability of patients getting 20 - 30 vision, is given by:

P = 4C3 (0.97) (3) (0.03) (1)

  = 0.1095

answer: f = 32.2m

step-by-step explanation: that is the answer