[Solution Library] Last year the records of Ski and Golf Inc., a sporting goods chain, showed the man amount spent by a customer was $24. A sample of 61
Question: Last year the records of Ski and Golf Inc., a sporting goods chain, showed the man amount spent by a customer was $24. A sample of 61 transactions this month revealed the mean amount spent was $28 with a standard deviation of $5. As the 0.05 significance level, can we conclude that the mean amount spent has increased ?
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