A large supermarket chain will raise its stock of bakery products if more than 20% of its customers are purchasers of bakery products. A random sample of 100 customers found 28% purchased bakery items. A 5% significance test is conducted to find out if the chain should increase its bakery stock.
a. Determine the null hypothesis?
b. Determine the alternate hypothesis?
c. Test the conditions
d. What is the z-value?
e. What is the p-value of the test statistic?
f. Conclusion? (In the context of the problem)