Solve the equation using square roots: 2x^2 - 17 = 15

2x^2 - 17 = 15

add 17 on both side

2x^2 = 32

divide both sides by 2

x^2 = 16

take the square root of both sides

x = sqrt (16)

x = +-4

-4,4

And replacing:

And the deviation:

And the distribution is given:

Step-by-step explanation:

For this case we have the following info given :

And the deviation would be

For this case we select a sample size of n = 5 and the distirbution for the sample mean would be:

And replacing:

And the deviation:

And the distribution is given: