Estimate. show how you estimated.

237 / 83 is 2.855421687

Now in this case I would round to the nearest hundredth. So I would look as the number in the hundredths place and look to the right of it and say, is it 5 or bigger, or is it less than 5. If it is less than 5 I would keep the number in the hundredths the same. If it is 5 or greater, I would add 1 to the number in the hundredths place. In this case it would be:

2.86

i dont know it

step-by-step explanation:

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560