Find height of mountain for given angle of elevation
In traveling across flat land, you notice the mountain directly in front of you. Its angle of elevation (to peak) is 3.5°. After you drive x = 13 miles closer to mountain, angle of elevation is 9°. Find height of mountain.
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Perform appropriate t-test to compare the mean systolic blood pressure between two populations using ?=0.05. You may suppose that the variances of two populations are equal. What do you conclude?
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Another way to say, The study does not appear to involve significant risk of physical, psychological, legal, or social harm, based on the methodology