Tabulation of a strike vote showed that 90% of those voting cast their ballot in favour of strike action. You take a sample of 50 voters. Assume this to be a binomial distribution.
What is the probability that fewer than 40 of your sample voters are in favour of strike action?
A) 0.2594
B) 0.4952
C) 0.0048
D) 0.0091
E) None of the choices are correct.

Question

Quizplus · Accepted Answer

The probability can be calculated using the binomial distribution formula. With n=50, p=0.9, and x<40, the cumulative probability is approximately 0.0048.

Tabulation of a Strike Vote Showed That 90% of Those