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Is each conclusion true or false?
Explain.


a) The mode number of books
read last month by students in
James’ class is 5. Therefore, most
of the students read 5 books.

b) A random sample of 100 people
had a mean income of $35 000.
Therefore, a random sample of
200 people would have a mean
the income of $70 000.

 May 28, 2020
 #1
avatar+21953 
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a)  More of the students read 5 books rather than any other number of books.

      However, it may not be true that "most" of the students read 5 books; this means that

          over 50% read 5 books; not necessarily true.

 

b)  If a random sample of 100 persons have a mean of $35,000, it is very likely that a 

      random sample of 200 persons will have a mean close to $35,000 also.

 May 28, 2020

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