Fizzco,a Beverage Manufacturing Company,is Interested in Determining Whether the Standard

question 20

Multiple Choice

Fizzco,a beverage manufacturing company,is interested in determining whether the standard deviation of their dispensing process has changed from a required level of 5 millimeters.They have taken a random sample of 12 bottles and have measured the amount of beverage dispensed into each bottle (in millimeters) as follows: 352 345 347 357 341 356 349 343 346 351 348 361
Which of the following is the correct 95% confidence interval of the population standard deviation?

• A) [18.005,103.425]
• B) [4.24,18.005]
• C) [10.17,103.425]
• D) [4.24,10.17]