Question 3 0/5 pts 9 10 2 4 0 Details You work for a soft-drink company in the quality control division. You are interested in the standard deviation of one of your production lines as a measure of consistency. The product is intended to have a mean of 12 ounces, and your team would like the standard deviation to be as low as possible. You gather a random sample of 14 containers. Estimate the population standard deviation at a 95% level of confidence. Use 3 decimal places for all answers. 12.1 11.94 11.92 12.22 12.17 12.03 11.81 12.06 12.04 11.86 12.04 11.98 11.89 12.08 (Data checksum: 168. 14) a) Find the sample standard deviation: b) Find the lower and upper x critical values at 95% confidence: Lower: Upper: c) Report your confidence interval for o:( Question Help: Message instructor Submit Question Question 4 1/5 pts 9 8-10 4 0 Details Score on last try: 1 of 5 pts. See Details for more. Get a similar question You can retry this question below A fitness center is interested in finding a 98% confidence interval for the standard deviation of the number of days per week that their members come in. Records of 30 members were looked at and the standard deviation was 1.9. Use 3 decimal places in your answer. a. To compute the confidence interval use a Chi-Squared ~ ~ distribution. b. With 98% confidence the population standard deviation number of visits per week is between and visits. c. If many groups of 30 randomly selected members are studied, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population standard deviation number of visits per week and about percent will not. Question Help: Message instructor Submit