Question

Please answer each and every step and do all the calculations and steps in answer .

(3 points) 3. In Amazon the average price of a N95 50 pcs bundle is $ 75. It follows a normal distribution. The probability that the price is between 55 and 60 is 4.41% and that the probability that it is greater than 90 is 6.68%. The middle 95.46% will be between what prices? (4 points)

4. Coquitlam Builders is a medium size home construction company. It wants to test the hypothesis that the average size of a new home unit exceeds 2,400 square feet. A random sample of 36 newly constructed homes had a mean of 2,510 square feet. Assume that the standard deviation of the size for all newly constructed homes is 480 square feet. Toll Brothers would like to set a = 0.02. Using the confidence interval approach, what is the decision in this case? (3 points)

Answer 1

My dear student I am allow to solve one question at a time so I am solving first one as per Chegg policy