Simplify 9 divided by 3 minus 2i answers: a.-27 minus 18i divided by 14 b. 9i divided by 2 plus 3i c. 27 plus 18i divided by five d. 27 plus 18i divided by 13

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?