The staff of a small company includes 3 secretaries, 18 technicians, 2 engineers 1 executive and 39 factory workers. If a person is selected at random, what is the probability that he or she is a factory worker ?
2007-09-30 13:57:28 · 5 answers · asked by Ryan =] 1 in Science & Mathematics ➔ Mathematics
there are 3 + 18 + 2 + 1 + 39 = 63 total employees
39 / 63 are factory workers. if you are picking at random then this is also the same as the probability.
2007-10-02 10:32:33 · answer #1 · answered by Merlyn 7 · 0⤊ 0⤋
p= 3/63 (secretaries)
p= 18/63 (technicians)
p= 2/63 (engineers)
p=1/63 (executive)
p=39/63 (factory workers)
there is a 39/63 chance that if a person is picked at random they will be a factory worker. (p is for probability)
i think that is correct and i hope that is what you were asking for if not sorry.
2007-09-30 21:06:07 · answer #2 · answered by ♥Xenia♥ 5 · 0⤊ 0⤋
The total number of people at the company is
3+18+2+1+39 = 63
The total number of factory workers is 39.
So, the probability that a randomly-selected person is a factory worker is
P = 39/63
P = 0.619048, or about 62%
2007-09-30 21:01:26 · answer #3 · answered by lithiumdeuteride 7 · 0⤊ 0⤋
39 / (3+18+2+1+39) = 39/63 = 13/21 approx 0.62
The probability is the number of ways of a successful outcome (picking a factory worker) divided by the number of possible outcomes (picking anyone at th company).
2007-09-30 21:05:20 · answer #4 · answered by language is a virus 6 · 0⤊ 0⤋
63 total employees
39/63 = 13/21
2007-09-30 21:02:14 · answer #5 · answered by Marvin 4 · 0⤊ 0⤋