If x = 6, what is the value of 4x2 - 7?
O A.
151
B. 137
C. 571
D.
172

B

Step-by-step explanation: 6^2 = 36

36*4= 144

144-7= 137

Given Information:

Mean = μ = 1497

Standard deviation = σ = 322

test value = x = 1200

Required Information:

P(x < 1200) = ?

P(x < 1200) = 0.17879

Explanation:

First we will find the z-score

P(x < X) = P(z < (x - μ)/σ)

P(x < 1200) = P(z < (1200 - 1497)/322)

P(x < 1200) = P(z < -0.92)

The z-score corresponding to z < -0.92 from z-table is given by

P(z < -0.92) = 0.17879

Therefore, the probability that SAT the test score will be less than 1200 is 0.17879.