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A recent study in a small city stated that the average age of robbery victims was 63.5 years. A random sample of 20 recent victims
A recent study in a small city stated that the average age of robbery victims was 63.5 years. A random sample of 20 recent victims had a sample mean of 63.7 years and a sample standard deviation of 1.9 years. At = 0.05, is the average age higher than originally believed? (Use t-scores) a. State the hypotheses and identify the claim. b. Find the critical value and compare with the test value. c. Find the p-value and compare with . d. Make the decision about null hypothesis. e. Summarize the results and make a full sentence conclusion
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