Thank you for the opportunity to help you with your question!
null hypothesis=starting age to smoking is 19
alternative hypothesis=starting age is not 19
actual mean is 18.2 and the expected mean is 19. We need to normalize our data since we are assuming normality and we need to find Z statistic to be able to either accept or reject our hypothesis
we need normal tables to check our Z statistic of -0.6154 and make the necessary conclusion.
our result is 0.9463 which is greater than our level of significance of 0.05. we reject the null hypothesis and conclude that the data is not sufficient enough to claim a starting age of 19 to smoking
Content will be erased after question is completed.