Two buildings are 200 feet apart. The height of the taller building is 50 ft. The angle of depression from the top of the taller
building to the top of the shorter building is 8°. What equation below will correctly determine the height (h) of the shorter building? A. h = 50 – 200(tan 8°) B. h = 50 – 200(cos 82°) C. h = 50 – 200(tan 82°) D. h = 50 – 200(sin 82°)
2 answers:
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Answer:
Step-by-step explanation:
The 90th percentile of a normally distributed curve occurs at 1.282 standard deviations. Similarly, the 10th percentile of a normally distributed curve occurs at -1.282 standard deviations.
To find the percentile for the television weights, use the formula:
, where
is the average of the set,
is some constant relevant to the percentile you're finding, and
is one standard deviation.
As I mentioned previously, 90th percentile occurs at 1.282 standard deviations. The average of the set and one standard deviation is already given. Substitute ,
, and
:
Therefore, the 90th percentile weight is 5.1282 pounds.
Repeat the process for calculating the 10th percentile weight:
The difference between these two weights is .