Answer:
y=1
x=2
(2,1)
Step-by-step explanation:
x=2y
2x+5y=9
2(2y)+5y=9
4y+5y=9
9y=9
y=1
x=2(1)
x=2
(2,1)
The probability is 0.05.
We can use a z-score to compute this probability:
Using a z-table (http://www.z-table.com) we see that the probability that the score is less than 2000 is 0.9525. Since we want the probability that the score is at least, or "greater than or equal to," 2000, we subtract this from 1:
1-0.9525 = 0.0475, which rounds to 0.05.
Hour | 1 | 2 | 3 | 4 |
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$$$$|18|36|54|72
Answer:
UCL (X-bar) = X mean+ (A2 x R-bar)
LCL (X-bar) = X mean -(A2 x R-bar)
Center line = Mean
A2 for sample size of 10 = 0.308
X mean = 45.343019
R bar = Average of range = 0.0076382
UCL (X-bar) =45.343019+(0.308*0.0076382) = 45.3453715656 grams
LCL (X-bar) = 45.343019-(0.308*0.0076382) = 45.3406664344 grams
Center line = Mean = 45.343019