Question

the numbers below represent 10 trials of a simulation 2632, 1365,9367,2056, 0026, 6564, 1434, 8045, 4781, 8681 the numbers 0-7 represent students who watched television last night and 8 and 9 represent students who did not. based on the simulated data, what was the probability that exactly 2 out groups out of 4 randomly selected watched television last night show with work

Answer 1

1/10

Explanation:

Apparently, a "trial" is a representation of a sample of 4 students. If the digits in that sample are 8 or 9, the students did not watch television. We can revise each of the trials by changing digits 0-7 to W, and digits 8-9 to N. (W = watched TV; N = did not watch TV.)

Now, the 10 trials are ...

WWWW, WWWW, WWWW, WWWW,

WWWW, WWWW, WWWW, NWWW, WWNW, NWNW

Of the 10 trials, 1 trial had the result that exactly 2 of the 4 watched TV.

The probability that exactly 2 of 4 watched TV is about 1/10 = 10%.