A 95% confidence interval for the proportion of young adults who skip breakfast is .20 to .27. Which of the following is a correct interpretation of this 95% confidence interval? A The proportion of young adults who skip breakfast 95% of the time is between .20 and .27. B We are 95% confident that the sample proportion of young adults who skip breakfast is between .20 and .27. C If this study were to be repeated with a sample of the same size, there is a 95% probability that the sample proportion would be between .20 and .27. D We are 95% confident that the true proportion of young adults in the population who skip breakfast is between .20 and .27.

Amanufacturing firm has been averaging 16.8 orders per week for several years. however, during a recession, orders appeared to slow. suppose the firm’s production manager randomly samples 31 weeks and finds an average of 15.6 orders with a standard deviation of 2.3 orders. using a 0.025 significance level, test whether the mean number of orders has decreased. type the full 5 step procedure into the answer box, then for multiple choice practice, answer the following: 1. what is the name and symbol of the parameter that you are testing? 2. what is the symbol and value of the point estimate of that parameter? 3. what distribution are you using to test this parameter? 4. what is the critical value? 5. what is the test statistic value? 6. what is the p-value?