1. Rat weights are normally distributed with μ = 6 lbs. and σ = 0.45 lbs., X = N (6, 0.45).
a. Find the percentage of rats that are less than 6 lbs.

Olivia uses the work below to determine 55% of 720 which explains the error in olivia’s solution

If eh = hg and hg=16, find the diameter of k

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?