Vlad tried to solve an equation step by step.
\qquad\begin{aligned} -8p+14&=42 \\ -8p&=28&\green{\text{Step } 1} \\ p&=-3.5&\blue{\text{Step } 2} \end{aligned}
−8p+14
−8p
p


=42
=28
=−3.5


Step 1
Step 2

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?