The daily lowest temperature, in degrees fahrenheit, for a certain week are -2, -3, x, 2x, 4, 8. for the week, the sum of the temperatures was -7°f. what is the value of x? a.–3 b.–1 c.1 d.3

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?