Question

A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 423 gram setting. It is believed that the machine is underfilling the bags. A 49 bag sample had a mean of 419 grams. Assume the population standard deviation is known to be 23. Is there sufficient evidence at the 0.05 level that the bags are underfilled?

Step 1 of 6:

State the null and alternative hypotheses.

Step 2 of 6:

Find the value of the test statistic. Round your answer to two decimal places.

Step 3 of 6:

Specify if the test is one-tailed or two-tailed.

Step 4 of 6:

Find the P-value of the test statistic. Round your answer to four decimal places.

Step 5 of 6:

Identify the level of significance for the hypothesis test.

Step 6 of 6:

Make the decision to reject or fail to reject the null hypothesis.

Answer 1