Identify the sample and population in the following question: In a Gallop poll o
ID: 3200301 • Letter: I
Question
Identify the sample and population in the following question: In a Gallop poll of480,000 Americans-65 and older, 43% of the seniors claimed to be nonsmokers. Sample: 43% nonsmokers, Population: Americans 65 and older Sample: Americans 65 and older, Population: All Americans Sample: All Americans, Population: Americans 65 and older Sample: 480,000 Americans 65 and older, Population: All Americans 65 and older Suppose the what are the 600, with a standard deviation of 50. If each score is increased by 10, what are the new mean and standard deviation? 600, 60 610, 50 610, 55 610, 60 600, 50 Please put your responses on the answer sheet provided in class.Explanation / Answer
7 ) The correct option is ( D ) .
( D ) Sample : 480,000 Americans 65 and older , Population : All Americans 65 and older .
8 ) Mean is affected by the change of base and scale . So if each score is increased by 10 , then the revised value of mean is 610 . Again , standard deviation is unaffected by the change of base and scale . So , the value of the standard deviation will remain unchanged .
Hence the correct option is ( B ) .
( B ) 610 , 50 .