(Solved): please solve all parts of the question, thank you. 19. (a) (b) (c) A supplier of construction mater ...

please solve all parts of the question, thank you.

19. (a) (b) (c) A supplier of construction materials claims that no more than 10% of the bolts he supplies are defective. To test this claim about the population proportion at a = 0.05, a random sample of 50 bolts are selected and 11 bolts are determined to be defective. State the null and the alternative hypotheses. State the test statistic and determine the rejection region. Carry out the test and state an appropriate conclusion.