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P(rolls a ten)=3/36=1/12
P(rolls a three)=2/36=1/18
[I am going to assume that if he rolls a ten or three, he also gets his five dollars back, in addition to the winnings.]
Expected value=(1/12)*10+(1/18)*20-(31/36)*5=-85/36, or approximately -2.36
If he doesn't get his five dollars back when he wins,
Expected value=(1/12)*10+(1/18)*20-5=-110/36, or approximately -3.055
[I actually just had this on my statistics final.
I got this one wrong still don't know the answer, but the answer you have isn't one of the possible answers I had.... Maybe -2.78?]
What else can I help you with?
How many rolls of dimes would make 20 dollars?
One roll of dimes is 5 dollars. Therefore it would take 4 rolls of dimes to make 20 dollars.
How many half-dollars in a roll?
Rolls of half dollars are $10.00 so 20 coins are needed
How many rolls of pennies nickels dimes quarters half dollars and dollars in a box?
50 in each box
How many rolls of pennies equal 10.00?
A roll of pennies contains 50 pennies, or 50 cents. Two rolls is 1.00, so to get 10 dollars you need 20 rolls
If i roll a die 90 times how many times can i expect to roll a 6?
pr(six) = 1/6 → expected 6s in 90 rolls = 1/6 × 90 = 15
How many rolls of half dollars in a box?
A standard bank box of nickels contains $100 worth, which is 50 rolls at $2 each.
How many rolls of dimes would make 20 dollars?
One roll of dimes is 5 dollars. Therefore it would take 4 rolls of dimes to make 20 dollars.
Do silver dollars come in rolls?
The U.S. has not issued any "Silver Dollars" since 1935 but yes they were available in $20.00 rolls from most banks.
How much is a Rolls-Royce worth?
$340,000-$403,000 dollars
What are the requirements to buy a Rolls-Royce?
1 million dollars.
How many half-dollars in a roll?
Rolls of half dollars are $10.00 so 20 coins are needed
How many rolls of pennies nickels dimes quarters half dollars and dollars in a box?
50 in each box
How many rolls of pennies equal 10.00?
A roll of pennies contains 50 pennies, or 50 cents. Two rolls is 1.00, so to get 10 dollars you need 20 rolls
How may time can you expected to roll a 4out of 18 rolls on a six sided sides?
Three times.
How much do pizzarolls cost?
pizza rolls cost about 1-2 dollars if not $3.
What rolls are there at home?
The two major home roles are the husband and wife roles. The husband is expected to go out and work to provide for his family and the wife is expected to cook, clean and care for the children.
How much money does it cost to make egg rolls?
Approximately 10 to 20 dollars per roll
