Suppose that the waiting times for burger maker restaurant is normally distributed with a standard...
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Suppose that the waiting times for burger maker restaurant is normally distributed with a standard deviation of 30 minutes. A random sample of 75 customers in the burger maker restaurant had an average time of 90 minutes. Find the lower confidence limit of the 95% confidence interval. O a. 83.21 b. 85.57 O G.8193 od 84.32
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