in each of the following statements, identify the boldface number as a value of
ID: 3331121 • Letter: I
Question
in each of the following statements, identify the boldface number as a value of a population parameter or a sample statistic a) A half-ton pickup truck is designed to safely carry a maximum of 100 pounds. the drivers are hauling much heavier loads. the state police randomly stopped 50 pickup trucks on an interstate highway and carefully weighed the contents in the truck bed the mean weighed was 1037 pounds d) in arandom sample of dentists 80% recommended a certain prodect to help whiten teeth
e)During a recent winter, the month of january was particularly cold A power company in pennsylvanian reported that the mean munber of hilowatts used by eachcustomer during january was 1346
Explanation / Answer
Remember this:
A statistic and a parameter are very similar. They are both descriptions of groups, like “50% of dog owners prefer X Brand dog food.” The difference between astatistic and a parameter is that statistics describe a sample. A parameterdescribes an entire population.
a) A half-ton pickup truck is designed to safely carry a maximum of 1000 pounds. TheDepartment of Transportation is concerned that drivers are hauling much heavier loads. TheState Police randomly stopped 50 pickup trucks on an interstate highway and carefullyweighed the contents in the truck bed. The mean weight was1037pounds.
Ans: This 1037 relates to sample. So, it is a sample statistic.
d) in a random sample of dentists 80% recommended a certain prodect to help whiten teeth
Ans: Statistic
e) During a recent winter, the month of january was particularly cold A power company in pennsylvanian reported that the mean munber of hilowatts used by eachcustomer during january was 1346
Ans: Parameter as it corresponds to population.
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