# Probability

• Mar 8th 2010, 04:09 PM
sahip
Probability
Suppose 8% of new computers malfunction within the first year. A school purchased 15 computers for its lab.
a). What is the probability that none of the new computers will malfunction within the first year ?
b). What is the probability that more than 2 computers will malfunction within the first year ?

Thank you.
• Mar 8th 2010, 04:50 PM
mr fantastic
Quote:

Originally Posted by sahip
Suppose 8% of new computers malfunction within the first year. A school purchased 15 computers for its lab.
a). What is the probability that none of the new computers will malfunction within the first year ?
b). What is the probability that more than 2 computers will malfunction within the first year ?

Thank you.

X ~ Binomial(n = 15, p = 0.08)
• Mar 9th 2010, 02:52 PM
sahip
Hi,
Thank you for your response to the probability question. I am not sure of the form of your answer. Can you provide a numerical solution ?

Many thanks.

Sahip
• Mar 9th 2010, 05:38 PM
mr fantastic
Quote:

Originally Posted by sahip
Hi,
Thank you for your response to the probability question. I am not sure of the form of your answer. Can you provide a numerical solution ?

Many thanks.

Sahip

Have you learnt about the binomial distribution?
• Mar 9th 2010, 06:08 PM
sahip
Probability problem
Yes, I have studied the binomial distribution. Is the numerical answer for part a) 0.286
Thank you.

sahip
• Mar 9th 2010, 10:33 PM
mr fantastic
Quote:

Originally Posted by sahip
Yes, I have studied the binomial distribution. Is the numerical answer for part a) 0.286
Thank you.

sahip

Yes.