Given: X = r + 2, Y = 2r - 9, and Z = r 2 + 17r + 30. Simplify [X · Y - Z] ÷ X.
1 answer:
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Answer:
Test statistic is [(n - 1) *S^2 ]/ σ ^2 = [(22 - 1) *(3.9)^2 ]/ (3.4) ^2
with 21 degrees of freedom
Yes this data fits at the 10% level of significance, so I would not reject that statistic of 3.9 mmHg as a wrong standard deviation
Step-by-step explanation:
use the expression I attached in the image to find
[(n - 1) *S^2 ]/ σ ^2
where S = the standard deviation calculated from the sample of n trials.
sigma is the population standard deviation.
[(22 - 1) *(3.9)^2 ]/ (3.4) ^2 = 21 * 15.21 / 11.56 = 27.6306
all we have to do now is to make sure this number is in the 90 % confidence
interval. remember this has 21 degrees of freedom, look at the chi-squared chart.
11.5913 < 27.6306 < 32.67905
where 11.5913 is the lower bound of the chart
and 32.67905 is the upper bound
Answer:
In $80.00 , we get 102 apples.
Step-by-step explanation:
As given, 8 pound apples costs = $20.00
so,
If we double the cost given , then we get double the times of apple given
⇒ we get 16 pound apple for = $40.00
Again, double the cost , gets double the apple
⇒ we get 32 pound apple for = $80.00
As,
1 pound= 16 ounces
⇒32 pound apple = 32×16 = 512 ounces
Now,
given that
1 apple = 5 ounces
⇒5 ounce = 1 apple
⇒1 ounce = apple
⇒512 ounces = ×512 = 102.4 ≈ 102 apples
∴ we get
In $80.00 , we get 102 apples.
The angles would be 38.85, 51.19, and 90. I attached a picture showing the steps.
