# probability1

• Nov 3rd 2007, 02:45 AM
0123
probability1
A corporation produces packages of paper clips. The number of clips per packages varies

Number of clips Proportion of packages
47 0.04
48 0.13
49 0.21
50 0.29
51 0.20
52 0.10
53 0.03

Two packages are chosen at random. What is the probability that at least one of them contains at least 50 clips?

No idea. Thanks a lot.
• Nov 3rd 2007, 02:51 AM
CaptainBlack
Quote:

Originally Posted by 0123
A corporation produces packages of paper clips. The number of clips per packages varies

Number of clips Proportion of packages
47 0.04
48 0.13
49 0.21
50 0.29
51 0.20
52 0.10
53 0.03

Two packages are chosen at random. What is the probability that at least one of them contains at least 50 clips?

No idea. Thanks a lot.

This is 1 minus the parbability that both contain less than 50.

So add up the probabilities for 47 to 49 to get the probability that a pack
contains less than 40. Then the probability that poth contain less than 50
is the square of this.

RonL
• Nov 3rd 2007, 03:01 AM
0123
Am I squaring because I am multiplying them because they are indeoendent?
• Nov 3rd 2007, 10:49 AM
CaptainBlack
Quote:

Originally Posted by 0123
Am I squaring because I am multiplying them because they are indeoendent?

Yes

RonL