a random sample of size 200 is drawn from a large population. The population standard deviation is 1.2. The sample mean is 15.8.
Estimate the size of the population mean including margin of error.
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In this question, you have to use the Pythagorean theorem. (the formula is in the box, ‘a squared’ and ‘b squared’ is used to find the legs of the triangle, while the ‘c squared’ in the formula is used to find the hypotenuse of the triangle.
The slope of the equation is calculated as:
Where is the height of the upper part of the slope and
is the height of the low er part.
So, the equation of the line is:
With this equation we can find the height of Alberto after having passed 10 sec.
After 10 seconds Alberto is 350 feet from the bottom of the slope.
Alberto's speed is:
The speed in miles per hour is: