Q004 Hypothesis test for 1 mean A fast food restaurant claims that the mean waiting time is less than 2 minutes (original claim). A random sample of 42 customers revealed a sample mean waiting time of 1.8 minutes with a sample standard deviation of 0.376 minutes. Test the restaurants claim at a alpha= 0.05 level of significance. Assume that the population has a normally distribution and the population standard deviation is unknown. Use the Confidence interval method to test the restaurant's claim Use the guidelines (with graph) and number each step. ( Hint: Use t-test) 15 points total. graph is 4 points.
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Null hypothesis (H₀): The mean waiting time is equal to 5 minutes, i.e., µ = 5. Alternative hypothesis (H₁): The mean waiting time is less than 5 minutes, i.e., µ < 5. Show more…
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