Answer: 45 Pennies and 15 Nickels
Step-by-step explanation:
0.05 x 15 = 0.75
0.01 x 45 = 0.45
0.45 + 0.75 = 1.20
Answer:
$57.25
Step-by-step explanation:
$7.00 + (6) $3.50 + $17.25 + (3) $4.00 = $57.25
-7 is correct because a negative plus a negative is always a negative
For the answer to the question above the probability of exactly x successes is
P(X=x)=b(x;n,p) = (nCx)(p^x)((1-p)^(n-x))
where nCx is number of combinations of n things taken x at a time, and "^" means exponentiation.
n = 10
p = 0.2
P(X=7) = 10C7*(0.2^7)*(0.8^3) = 0.00079
P(X=8) = 10C8*(0.2^8)*(0.8^2) = 0.00007
P(X=9) = 10C9*(0.2^9)*(0.8^1) = 0.00000
P(X=10) = 10C10*(0.2^10)*(0.8^0) = 0.00000
.00079 + .00007 + 0 + 0 = .00086 = .0009 rounded
8+9+10= 27 and 27 divided by 3 is 9. So the mean of the chocolate chips is 9