The average weight of dogs of a certain breed is 122 lbs. with a standard deviation of 15 lbs. The distribution of weights of dogs of this breed is approximately normal.

What does a random dog need to weigh to be considered to be in the top 5% for weight,

for dogs of this breed?

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?