need b-d. please explain how you got it

ork Video A study showed that 67% of supermarket shoppers believe supermarket brands to be as good as national name brands. To investigate whether this result applies to its own product, the manufacturer of a national name-brand ketchup asked a sample of shoppers whether they believed that supermarket ketchup was as good as the national brand ketchup. a. Formulate the hypotheses that could be used to determine whether the percentage of supermarket shoppers who believe that the supermarket ketchup was as good as the national brand ketchup differed from 67%. klo: p is equal to 0.67 Ha: p is not equal to 0.67 b. If a sample of 100 shoppers showed 55 stating that the supermarket brand was as good as the national brand, what is the p-value (to 4 decimals)? X c. At a = .05, what is your conclusion? p-value is |Select WHO d. Should the national brand ketchup manufacturer be pleased with this conclusion? indicates that Select , a sample proportion of Select than of the shoppers believe the supermarket brand is as good as the name brand, Hide Feedback Partially Correct