A psychiatrist is interested in finding a 99% confidence interval for the tics per hour exhibited by children with Tourette syndrome. The data below show the tics in an observed hour for 13 randomly selected children with Tourette syndrome. Round answers to 3 decimal places where possible. 1294891211922254 a. To compute the confidence interval use a ? 3 distribution. b. With 99% confidence the population mean number of tics per hour that children with Tourette syndrome exhibit is between and c. If many groups of 13 randomly selected children with Tourette syndrome are observed, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population mean number of tics per hour and about percent will not contain the true population mean number of tics per hour. You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately 0' = 62.1. You would like to be 98% confident that your estimate is within 5 of the true population mean. How large of a sample size is required? Round up to nearest whole number. Quon wants to advertise how many chocolate chips are in each Big Chip cookie at his bakery. He randomly selects a sample of 49 cookies and finds that the number of chocolate chips per cookie in the sample has a mean of 5.7 and a standard deviation of 1.2. What is the 80% confidence interval for the number of chocolate chips per cookie for Big Chip cookies? Assume the data is from a normally distributed population. Round answers to 3 decimal places where possible.