C. 7.2°F is warmer than 7.0°F but colder than 7.6°F.
this is a binomial problem: p = 0.7 and q = 0.3
a) (0.7)^6
b) (6C4)(0.7)^4(0.3)^2
c) Pr ( at least 4) = Pr(4) + Pr(5) + Pr(6) = (6C5)(0.7)^5(0.3) + (0.7)^6
d) Pr (no more than 4) = 1 - Pr(at least 4) = 1 - (answer from c)
<span>3 3/4q=30 </span>Answer: q=8
The answer is 1,342 cm squared. This problem is fairly simple, but ok.
