Question

1

Answer 1

That means each day he has a probability of 0.86 of NOT catching a fish. So what's his probability of not catching a fish for all 7 days?

Answer 2

multiply .14 by 7 and that's his success rate. So he has a 9.8% chance of catching a fish during a 7 day period.

Answer 3

That isn't how it works...

Answer 4

@SACAPUNTAS you add 0.86 7 times?

Answer 5

No. Multiply. Each day, he has an 86% chance of not catching a fish. That means, for two days, he has a 0.86*0.86 chance of not catching a fish. For three days, 0.86*0.86*0.86... and so on...

Answer 6

@SACAPUNTAS so my final answer would be the product of 0.87 multipkied 7 times right?

Answer 7

^0.87

Answer 8

ugghh i meant to write 0.86

Answer 9

No, that's his chance of NOT catching a fish on all 7 days. You want his probability of catching a fish. However, knowing that, it should be easy to get.

Answer 10

ohh so that's just 0.14 multiplied 7 times?

Answer 11

No. If something has a 75% chance of not happening, what is its chance of happening?

Answer 12

25%

Answer 13

Right. Because 1 - 0.75 = 0.25. So if you know his chance of not catching a fish on all 7 days...

Answer 14

i dont get it..

Answer 15

You know the probability of a thing not happening. And you know how to change that to the probability of a thing happening.