This table gives a few (x, y)(x, y)left parenthesis, x, comma, y, right parenthesis pairs of a line in the coordinate plane. xxxyyy
-36−36minus, 36-117−117minus, 117
-27−27minus, 27-98−98minus, 98
-18−18minus, 18-79−79minus, 79
What is the yyy-intercept of the line?

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?