Mean, x_bar = 1518
Standard deviation, sigma = 325
Range required: 1550 ≤ X ≤ 1575
Z = (X - x_bar)/sigma
Z1 = (1550-1518)/325 ≈ 0.1
Z2 = (1575-1518)/325 ≈ 0.18
From Z tables,
P(Z1) = 0.5398
P(Z2) = 0.5714
P(1550≤X≤1575) = P(Z2) - P(Z1) = 0.5714 - 0.5398 = 0.0316
The correct answer is C.
Answer:
I am assuming you are asking for what percent correct she got. She got 46% correct.
Step-by-step explanation:
You divide the answers correct by the total questions. She got 69 out of 150, so dividing that is .46
To turn a decimal into a percentage, just move the decimal two places to the right, thus getting 46 %
If I assumed what you were asking incorrectly, let me know and I'll be happy to help!
X=2 and you go up on the y-intercept 2 times and move 1 right.
Answer:
a because i said so trust me
Step-by-step explanation:
Answer:
8:7 and 64:49
Step-by-step explanation:
If the widths of two similar rectangles are 16 cm and 14 cm, the ratio of the areas are 8:7 and 64:49.
