H3lp pl34s

Simplify the expression 10/11(22z) + (a+5) -1

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

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?