P(picking one defective) = 3/10
P(picking a 2nd defective) = 2/9

P(1 and 2 defective) = 3/10 x 2/9 = 6/90 = 0.066

Second method using combination:
³C₂ / ¹⁰C₂ = 1/15 = 0.066

4 0

4 years ago

A certain group of test subjects had pulse rates with a mean of beats per minute and a standard deviation of beats per minute. U

Lisa [10]

Answer: is this it?

Step-by-step explanation:

5 0

1 year ago

The coordinate plane has the following points A=(2, 1), B=(5, 1), C=(7,2), and 1 point

dusya [7]

Answer:

Step-by-step explanation:

Coordinate Plane

The image provided shows the four points given:

A=(2, 1), B=(5, 1), C=(7,2), D=(4,2).

It can be clearly seen the length of CD is just the difference of their x-coordinates:

CD = 7 - 4 = 3

We can also use the formula of the distance.

Given two points C(x,y) and D(w,z), the distance between them is:

$d=\sqrt{(z-y)^2+(w-x)^2}$

$d=\sqrt{(2-2)^2+(7-4)^2}$

$d=\sqrt{0^2+3^2}$

$d=\sqrt{9}$

d = 3

3 0

3 years ago