A bag contains coloured balls. A ball is taken at random from the bag, its colour is noted, and the ball is replaced.
A second ball is taken at random from the bag, its colour is noted, and the ball is
replaced.
The probability that the ball is red is 0.2.
First ball
Second ball
0.2
Red
Red
0.2
0.8
Not red
0.2
Red
0.8
Not red
0.8
Not red
Work out the probability that only one of the two balls taken is red.

In the rectangle below ac=30 units what is de

Suppose babies born after a gestation period of 32 to 35 weeks have a mean weight of 25002500 grams and a standard deviation of 800800 grams while babies born after a gestation period of 40 weeks have a mean weight of 27002700 grams and a standard deviation of 385385 grams. if a 3232-week gestation period baby weighs 21252125 grams and a 4040-week gestation period baby weighs 23252325 grams, find the corresponding z-scores. which baby weighs lessless relative to the gestation period?

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)