1. Let X be a binomial random variable with n = 20 and p = .3. A. Write the expression for P(x = 6) in terms of the formula

, then

evaluate it using your calculator. (1 point)

B. Using probability notation, P(X = x), write out all the probabilities you'd need to add

up in order to calculate P(X < 6), and then evaluate it using your calculator. (1 point)

C. For part B, why did you choose the upper bound that you did? If you were using the

normal approximation could you choose a different upper bound? Why or why not?

(1 point)

the answer is c: divide the arc's degree measure by 360°, then multiply by the circumference of the circle.

i don't know, but that looks pretty bad. my school passed us unless we failed in all the subjects, but idk abt ur school's rules.

copyright potato 2019.

answer:

step-by-step explanation:

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.