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?
Determine the probability of fewer than 1,000 fatal crashes in a year (to 4 decimals)? Determine the probability the number of fatal crashes will be between 1,000 and 2,000 for a year (to 4 decimals)?
A personnel manager at the large firm needs to determine the mean length of stay,? of its employees. She takes a random sample of employees and finds out the sample mean () to be 25 years.
Consider the experiment where you toss two coins and notes outcome (H or T) of each. Which of the following mapping to a random variable X are allowable?
The average travel time to work for New York City residents is 36.5 minutes (Time Almanac, 2001). Suppose that the exponential probability distribution applies.
Assume the polynomial of degree 5 has real zeroes at x=-4 and x=2/3, multiplicity 2 and end behavior y=-x^5. Illustrate the sign analysis for m(x) > 0 and find solution set in inequality notation.
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