Answer:
Probability that randomly selected 4 persons all have insurance is = 0.1897
Step-by-step explanation:
Given that the probability of having an insurance equals 66%=0.66
Thus
Probability that person A has insurance = 0.66
Probability that person B has insurance = 0.66
Probability that person C has insurance = 0.66
Probability that person D has insurance = 0.66
Probability that randomly selected 4 persons all have insurance is

The point is that when you convert, you may get a fractional number, so you need to round up to the next can.
They sold 17 purses. 127.50 divided by the 7.50 is 17, which is the amount of purses
I agree. All real numbers except -1.