A coin is bent so that, when tossed, "heads" appears two-thirds of the time. What is the probability that more than 70% of 100 tosses result in "heads"? (EDGE2020-2021) 0.239
0.460
0.707
0.761

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?