Pleas

28, 45, 12, 34, 36, 45, 19, 20

part 1: find the mean of this set of data.

part 2: find the mean absolute deviation of this set of data.

part 3: using complete sentences, explain what your results for part a and b mean.

Which of the following is true for the relation f(x)=2x^2+1

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

Recall that the owner of a local health food store recently started a new ad campaign to attract more business and wants to know if average daily sales have increased. historically average daily sales were approximately $2,700. the upper bound of the 95% range of likely sample means for this one-sided test is approximately $2,843.44. if the owner took a random sample of forty-five days and found that daily average sales were now $2,984, what can she conclude at the 95% confidence level?