Is it unusual to get 5 when a pair of dice is rolled?

Not at all. In fact, there are 4 ways to roll it:

A 1 and a 4 or a 4 and a 1

A 2 and a 3 or a 3 and a 2

There are 36 possible ways you can roll 2 dice, so those 4 possibilities represent a 4/36 = 1/9 chance of rolling a total of 5 between two dice.

alot

step-by-step explanation:

its a wood chuck that can chuck wood

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