Please review this fix errors in the writing calculations

I'm sure the answers are right but the calculations might off ( please type and no pictures)

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3. Solve the following problem: About 30% of adults in the United States have a college degree. Thus, the probability that a person has a college degree is p = 0.30. If N adults are randomly selected, find possibilities that.

n=12

p= 0.3

q=0.7

x = 4

a) exactly x out of selected N adults have a college degree,

P(X-4) = (12C4) = (0.3)^4 (0.70^8= 0.2311

b) less than x out of selected N adults have a college degree, and

P(X<4) =P (0)+ P(1) )+ P(2) )+ P(3) =x3 =(12 CX) (0.3)^x (0.7)^12-x = 0

P(X <4)= 0.4925

c) greater than x out of selected N adults have a college degree.

P(X>4) =1 [ P(0)+ P(1) )+ P(2) )+ P(3) )+ P(4] = x9 = x1 =(12 CX) (0.3)^x (0.7)^12-x = 0

P(X>4) = ).0 2763