You have 100 quarters in a jar. one of the quarters is double sided (heads). you pick out a random quarter and flip it 7 times, and get all heads. what is the probability you picked the double sided quarter? then, given that you flipped it 7 times with all heads, what is the probability that you'll get heads on the 8th flip?

Probability of having the double sided coin is 1 %

Probability of getting heads on the next flip is 50%

Step-by-step explanation:

Based on the information given to us in the question we have a total of 100 coins in the bag and only 1 is double heads. Therefore the probability of you picking the double sided coin is or 1 % . This probability is not affected by the fact that the coin you chose got heads 7 times in 7 flips.

Since a coin has 2 sides and you do not know whether the coin you have is the double sided coin then you have to assume that it is a normal 2 sided coin. Therefore a normal 2 sided coin has a probability of or 50% with every flip of getting heads.

I hope this answered your question. If you have any more questions feel free to ask away at .

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock