Show your calculation in detail explaining each step. Make sure to show the critical value and the statistical table, which points to the value you used for the answer as well as other values to have come to an answer.

1. Researcher suspect that 18% of all high school students smoke at least one pack of cigarettes a day. At Wilson High School, with an enrolment of 300 students, a study found that 50 students smoked at least one pack of cigarettes a day. At = 0.05, test the claim that 18% of all high school students smoke at least one pack of cigarettes a day. Use the P-value method.(Answer: Do not reject 0 H ).
2. Explain why used the distribution that you used in your calculation. For example, if you used z-distribution, you must explain why you used it.