In 1987,34. 7 million households owned a dog ,and 27. 7million owned a cat. Since then, dog ownership has decreased by 0. 025 million households per year, and cat ownership has increased by 0. 375 million households per year. How meany Years, y, will it take for then to be equal

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?