Simplify the expression (x^19 y^21)^4/(x^2 y^6)^2 The simplified expression is ________.
2 answers:
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Answer:
answer is 107 degrees
Step-by-step explanation:
Given is a picture of triangle with vertices D, E and F
Given that exterior angle of F = 135 degrees
Hence interior angle of F =
Angle D = 28 degrees
Hence angle E =
Hence answer is 107 degrees
Answer:
The 95% confidence interval is between 26.5 ng/ml and 40.3 ng/ml
Step-by-step explanation:
We have that to find our level, that is the subtraction of 1 by the confidence interval divided by 2. So:
Now, we have to find z in the Ztable as such z has a pvalue of .
So it is z with a pvalue of , so
Now, find the margin of error M as such
In which is the standard deviation of the population and n is the size of the sample.
The lower end of the interval is the sample mean subtracted by M. So it is 33.4 - 6.9 = 26.5 ng/ml
The upper end of the interval is the sample mean added to M. So it is 6.4 + 33.4 + 6.9 = 40.3 ng/ml
The 95% confidence interval is between 26.5 ng/ml and 40.3 ng/ml