Answer is From all those aforementioned, the true statement is: Thanh’s grade is 2.5 standard deviations below the mean of the test grades.
explanation
The z scores are standard deviations. If, for example, a tool returns a z score of +2.5, it means that the result is a standard deviation of 2.5. Very high or very low (negative) z scores associated
with very low p values are at the ends of the normal distribution.
Use the formula (
)^2
in order to create a new term to complete the square.
(x−5)2−25
Give me the points thanks
Answer:
This equation has no real solutions, because the discriminant is less than zero.
Step-by-step explanation:
no solution
Solve for x by simplifying both sides of the equation, than isolating the variable.
x ≤ 8/3 or x ≥ 8
