A quality control inspector has drawn a sample of 15 light bulbs from a recent production lot. Suppose 20% of the bulbs in the lot are defective. What is the probability that exactly 3 bulbs from the sample are defective

0.2501

Step-by-step explanation:

Given : The proportion of the bulbs in the lot are defective = 20%= 0.20

Sample size : n =15

Let x be the binomial variable that represents the defective bulbs.

Binomial probability formula :

The probability that exactly 3 bulbs from the sample are defective : P(X=3)

Required probability = 0.2501

2/3

step-by-step explanation:

the slope of a line is equal to the rise/run. in this case the line rises 2 units for every +3 units it moves

proofs involving isosceles triangles often require special consideration because an isosceles triangle has several distinct properties that do not apply to normal triangles.(more about triangle types) therefore, when you are trying to prove that two triangles are congruent, and one or both triangles, are isosceles you have a few theorems that you can use to make your life easier.

step-by-step explanation:

an isosceles triangle has two congruent sides and two congruent angles. the congruent angles are called the base angles and the other angle is known as the vertex angle. ∠bac and ∠bca are the base angles of the triangle picture on the left. the vertex angle is ∠abc