Question

5. A manufacturer of potato chips would like to know whether its bag filling machine works correctly at the 431-gram setting. Based on an 18 bag sample where the average was 421 grams and the standard deviation was 14 grams, is there sufficient evidence at the 0.01 level that the bags are being underfilled?

   Step 1. State the null and alternative hypotheses. (5 points) Answer: ?o?: _______________?a?: _______________
   Step 2. Find the value of the test statistic. Round your answer to three decimal places.

   (6 points)

   Answer: ____________________
   Step 3. Specify if the test is one-tailed or two-tailed. (3 points)

   1. A) One-Tailed Test

   2. B) Two-Tailed Test

Step 4. Determine the decision rule for rejecting the null hypothesis. Round your answer to three decimal places. (5 points)

Answer: Reject ?? if ? < _______________
Step 5. Make the decision to reject or fail to reject the null hypothesis. (3 points)

1. A) Reject Null Hypothesis

2. B) Fail to Reject Null Hypothesis

Answer 1