Assuming a normal distribution we find the standardized z scores for a:-
z1 = (80 - 180) / 25 = = -100/25 = -4
z2 = (280-180) / 25 = 4
Required P( -4 < z < 4) from the tables is >99.9%
b
z1 = 130-180 / 25 = -2
z2 = 230-180 / 25 = 2
from tables probability is 2* 0.4773 = 95.46 %
Answer:
reflection across the x axis then reflection across the y axis
Step-by-step explanation:
Answer:
On x it is 9, on y it is 37,49
Step-by-step explanation:
Subtract 6x from both sides to get:
2y=-6x+12
Then divide both sides by 2 to get:
y=-3x+6
Answer:
D, 150 Seniors out of 250
Step-by-step explanation:
Multiply 3*150, and 5*150.
150 over 250 is the same as 3 out of 5.
