According to the radio announcer, the average price of kilogram of pork liempo is more than ₱210.00. However, a sample of 15 prices randomly  collected from different markets showed an average of ₱215.00 and  standard deviation of ₱9.00. Using 0.05 level of significance, is there  sufficient evidence to conclude that the average price of pork liempo is  more than ₱210.00?

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