Homework SourseThere is a 13 probability that one type of toaster will brea
There is a 1/3 probability that one type of toaster will break down within 2 years. What formula would you use to find the exact probability that 4 out of 5 such toasters will break within that time period?
P (x out of n) = [n! ÷ x!(n – x)!] [px] [(1 – p)n-x]
t = (x - x-bar) ÷ s/n
P(A) = (# examples of A) ÷ (total # outcomes possible)
F = s12 ÷ s22
| P (x out of n) = [n! ÷ x!(n – x)!] [px] [(1 – p)n-x] | ||
| t = (x - x-bar) ÷ s/n | ||
| P(A) = (# examples of A) ÷ (total # outcomes possible) | ||
| F = s12 ÷ s22 |
Solution
P (x out of n) = [n! ÷ x!(n – x)!] [px] [(1 – p)n-x]
it satisfies the criterial of binomial distribution. So, ans : A
