Mathematics
Mathematics, 08.11.2019 05:31, princesincer9256

Asample of 16 families was drawn for analysis of the average grocery spending. assume that the individual weekly records are normally distributed, with the unknown population average and unknown population standard deviation. sample summaries were: (sample mean) = $154 and (sample standard deviation) = $40. do you have sufficient evidence that the population average would be below $172? use the significance level of 10%.

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