The rainfall for the month of July was above average. The water level in a small lake measured 8 3/4 feet at the beginning of th
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So,
The percent increase is basically the same as percent decrease except that you subtract the June count from the July count. If you let x be the June count and y be the July count, you can write it mathematically as follows:
Substitute.
The percent increase in people from June to July is 33.3333333%, which is not one of the options you put there.
The percent increase is basically the same as percent decrease except that you subtract the June count from the July count. If you let x be the June count and y be the July count, you can write it mathematically as follows:
Substitute.
The percent increase in people from June to July is 33.3333333%, which is not one of the options you put there.
a) If f(y) is a probability density function, then both f(y) ≥ 0 for all y in its support, and the integral of f(y) over its entire support should be 1. eˣ > 0 for all real x, so the first condition is met. We have
so both conditions are met and f(y) is indeed a PDF.
b) The probability P(Y > 4) is given by the integral,
c) The mean is given by the integral,
Integrate by parts, with
Then