Which event includes an example of a dependent event? a) a coin is flipped. the result is recorded. the coin is then flipped a second time. b) a die is rolled. the result is recorded. the die is then rolled a second time. c) a card is drawn from a standard deck of 52 cards. the card is replaced and a second card is drawn. d) a bag contains red and green marbles. a marble is drawn from the bag and is not replaced. a second marble is then drawn from the bag.

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?