answer the ff. test the claim of the director

ACTIVITY: 1. The director of secretarial school believes that its graduates can type more than 85 words per minute. A random sample of 12 graduates has been found to have an average of 78.2 words per minute with standard deviation of 8.9 words per minute in a typing test. Using the 0.05 level of significance, test the claim of the director. Step 1: 080 IS mall axel Step 2: Step 3