Solve only a and b with full explanation

(Will give you rate ..thanks in advance)

3. The data below shows the average price of the items from two different brands for each month over a period of 12 months. a. Is there any outlier in brand B? if so, identify them. {3) b. Visualize how brand A average items price relate to that of Brand B items? Quantify that strength. (4) c. The company that produces these two brands believe the price of the items for both ofthese brands are normally distributed BrandAlZS, 4.2) and BrandBl26.2, 4.9}. The company was analyzing past 36 months of data coming from Brand A and its associated average price values. What is the probability that the average price of Brand A for a randomly selected month will be higher than the average price of Brand B items? (4)