Answer Happy

11. A hospital director believes that less than 30% of the test tubes contain errors. A sample of 300 tubes found 75 errors. Is there sufficient evidence at the 0.05 level to substantiate the hospital director's claim? Step 1. Enter the hypotheses: 2 Points Но H. 2 Points Step 2. Enter the value of the z test statistic, Answer: (Round your answer to 2 decimal places.)

2 Points Step 3. Specify if the test is one-tailed or two-tailed. One-Tailed Test OTwo-Tailed Test Step 4. Enter the decision rule. 2 Points Reject Hy if ? < (Round your answer to 2 decimal places.) Step 5. Make a decision. 2 Points Reject Null Hypothesis O Fail to Reject Null Hypothesis 2 Points Step 6. What is the conclusion? There is sufficient evidence to support the hospital director's claim. There is not sufficient evidence to support the hospital director's claim.