Warren County Telephone Company claims in its annual report that "the typical customer spends $62 per month on local and

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Warren County Telephone Company Claims In Its Annual Report That The Typical Customer Spends 62 Per Month On Local And 1 (49.63 KiB) Viewed 103 times

Warren County Telephone Company claims in its annual report that "the typical customer spends $62 per month on local and long-distance service." A sample of 12 subscribers revealed the following amounts spent last month. $64 $66 $63 $68 $56 $64 $67 $65 $65 $61 $53 $68 a. What is the point estimate of the population mean? (Round your answer to 3 decimal places.) Estimated population mean b. Develop a 99% confidence interval for the population mean. (Use t Distribution Table.) (Round your answers to 3 decimal places.) Confidence interval for the population mean c. Is the company's claim that the "typical customer" spends $62 per month reasonable? Yes and $ O No