Two random samples of 25 people were asked how many 12-ounce cans of soda they consume each week. The first sample contained both males and females, aged 12-19. The second sample contained both males and females, aged 20-39. The results are shown in the table below. SHOW YOUR WORK.

Sample #1

16 11 9 12 11

10 10 8 15 0

2 15 14 7 11

5 14 20 3 11

13 7 0 5 21

Sample #2

18 14 0 7 5

7 10 7 6 9

12 3 14 4 11

16 0 10 9 5

0 16 11 2 4

Part 1: Find the mean of Sample #1.

Part 2: Find the mean absolute deviation of Sample #1.
WRITER

Evaluate 8x2 + 9x − 1 2x3 + 3x2 − 2x dx. solution since the degree of the numerator is less than the degree of the denominator, we don't need to divide. we factor the denominator as 2x3 + 3x2 − 2x = x(2x2 + 3x − 2) = x(2x − 1)(x + 2). since the denominator has three distinct linear factors, the partial fraction decomposition of the integrand has the form† 8x2 + 9x − 1 x(2x − 1)(x + 2) = correct: your answer is correct. to determine the values of a, b, and c, we multiply both sides of this equation by the product of the denominators, x(2x − 1)(x + 2), obtaining 8x2 + 9x − 1 = a correct: your answer is correct. (x + 2) + bx(x + 2) + cx(2x − 1).