Answer: 
Step-by-step explanation:
Let A = he known the answer then A' = he guess the answer.
B = he answered it correctly
As per given , we have
By Bayes theorem , we have
The probability that the student knows the answer given that he answered it correctly is .
For the first one, the fraction version for 0.25 is 1/4 and the percentage is 25%
The answer is 15.525. All you have to do is divide 279.45 by 18 which gives you 15.525.
Answer:
$1.21
Step-by-step explanation:
Start by finding the total amount spent on shirts. Do this by multiplying $3.65 and 4 together. You will get 14.6. So, he spent $14.60 on 4 shirts. Take this amount and subtract it from the total amount paid for shirts and socks. $23.07 minus $14.60. This will give you $8.47 left to spent on socks. $8.47 divided by 7 is $1.21. Therfore, James paid $1.21 per pair of socks.
