In a random sample of 30 students at a high school, the mean score on a standardized test is 1514. Given that the standard deviation of all scores at the school is 141, find a 95% confidence interval and margin of error for the mean score among all students at the school. (Select all that apply) 0.354

-0.667

-0.389

0.162

0.667

-0.354

0.389

-0.162

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation:

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.