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?

MATLAB: An Introduction with Applications
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5. 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?

6. A physician claims that joggers' maximal volume oxygen uptake is greater than the average of all adults. A sample of 15 joggers has a mean of 40.6 milliliters per kilogram (ml/kg) and a standard deviation of 6 ml/kg. If the average of all adults is 36.7 ml/kg, is there enough evidence to support the physician's claim at α=0.05?

 

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