The average score is 500 points and the standard deviation is 50 points.Mean - 2 SD = 500 - 2 * 50 = 500 - 100 = 400It means that more than 400 on the standardized test is more than: Mean - 2 Standard deviations.For the Normal distribution: 100% - 2.5 % = 97.5% = 0.975.Answer: The probability that student scores more than 400 points is 0.975.
Answer:
the slope is 2 I am pretty sure
Answer:
5 < x < 13
Step-by-step explanation:
9+4 > x
4 + x > 9
Answer:
the second one, B
Step-by-step explanation:
This is because in both numbers the decimal was moved back one.