Question

A jar contains 4 pennies, 2 nickels and 4 dimes. A child selects 2 coins at random without replacement from the jar. Let X represent the amount in cents of the selected coins. Find the probability X = 10. Find the probability X = 11. Find the expected value of X.

Answer #1

A jar contains 5 pennies, 7 nickels and 2 dimes. A child selects
2 coins at random without replacement from the jar. Let X represent
the amount in cents of the selected coins. Find the probability X =
10. Find the probability X = 11. Find the expected value of X.

A jar contains 8 pennies, 2 nickels and 5 dimes. A child selects
2 coins at random without replacement from the jar. Let X represent
the amount in cents of the selected coins. Find the probability X =
10. Find the probability X = 11. Find the expected value of X.

A
jar contains 3 pennies, 7 nickels and 7 dimes. A child selects 2
coins at random without replacement from the jar. Let x represent
the amount in cents of the selected coins.
Find the probability X=10
Find the probability X=11
Find the expected value of X.

A jar contains 5 pennies, 8 nickels and 3 dimes. A child selects
2 coins at random without replacement from the jar. Let X represent
the amount in cents of the selected coins.
Find the probability X = 10.
Find the probability X = 11.
Find the expected value of X.

A jar contains 6 pennies, 3 nickels and 6 dimes. A child selects
2 coins at random without replacement from the jar. Let X represent
the amount in cents of the selected coins.
Find the probability X = 10..........................
Find the probability X = 11. ..............................
Find the expected value of X. ...........................

A jar contains 2 pennies, 7 nickels and 3 dimes. A child selects
2 coins at random without replacement from the jar. Let X represent
the amount in cents of the selected coins.
(a) Find P(x=10)
(b) Find P(x=11)
(c) Find the expected value of X

A jar contains 6 pennies, 3 nickels and 8 dimes. A child selects
2 coins at random without replacement from the jar. Let X represent
the amount in cents of the selected coins.
Find the expected value of X.

a jar contains 3 pennies, 8 nickels and 7 dimes. a
child selects 2 coins at random without replacement from the jar.
let x represents the amount in cent of the selected coins. find the
probability x=10, x=11 find the expected value of x

1.A jar contains 3 pennies, 8 nickels and 6 dimes. A child
selects 2 coins at random without replacement from the jar. Let X
represent the amount in cents of the selected coins.
Find the probability X = 10.
Find the probability X = 11.
Find the expected value of X.
2.Assume that z-scores are normally distributed with a
mean of 0 and a standard deviation of 1.
If P(z>d)=0.9434P(z>d)=0.9434, find d.
3.A company produces steel rods. The lengths of...

A bag of coins contains six types of coins: pennies, nickels,
dimes, quarters, half dollars, and dollars.
How many coins must the collection contain to guarantee that at
least 100 of the coins are of the same
type?

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