<span>The probability that a house in an urban area will develop a leak is 55%. if 20 houses are randomly selected, what is the probability that none of the houses will develop a leak? round to the nearest thousandth.
Use binomial distribution, since probability of developing a leak, p=0.55 is assumed constant, and
n=20, x=0
and assuming leaks are developed independently between houses,
P(X=x)
=C(n,0)p^x* (1-p)^(n-x)
=C(20,0)0.55^0 * (0.45^20)
=1*1*0.45^20
=1.159*10^(-7)
=0.000
</span>
Step-by-step explanation:
y= 5
x=3
.................
Another way of finding Surface Area is
- SA= 2LW+2LH+2HW
L= Length
W= Width
H= Height
the answer, and explained, would be this
2. SA= 2(12)(10)+2(12)(16)+2 (10)(16)
(<em>multiply</em>)
3. SA= 240 + 384 + 320
(<em>add</em>)
<em>The</em><em> </em><em>answer</em><em> </em><em>is</em><em>.</em><em>.</em><em> </em>
<em><u>SA</u></em><em><u>=</u></em><em><u>944ft3</u></em><em><u> </u></em>
