Answer:
A) 3.5
B) 1.6202
Step-by-step explanation:
In binomial distribution,
E(X) = np and Var(X) = npq while
SD (X) = √(npq)
Where n is number of cards drawn
p is probability of getting one particular shape
q = 1-p
So from the question, n = 14
p = 13/52 = 1/4
q = 1-(1/4) = 3/4
So;
A) E(x) = np = 14 x 1/4 = 3.5
B) SD (X) = √(npq) = √(14 x 1/4 x 3/4) = √(42/16) = √2.625 = 1.6202
Answer:
(3:-2) bc u must substitute -2 in for y in the 2th equation
Answer:
13.22875655532295...
Step-by-step explanation:
not a perfect square so... yea
brainliest pls
<span>165 / 266
Fraction already reduced (simplified) to lowest terms, gcf (165; 266) = 1, numerator and denominator are coprime numbers (they have no common prime factors).</span>
Answer:
x+42°+73°=180°(sum of angles of a triangle)
x+115°=180°
x=180°-115°
x=65°