help on this last question please???
can you help me please??
@mathmath333
wait
i think its a
as option b,c and d are contradicted
I'm confused... /:
@aum
in the option b it says only 3 books
it will comprise of 1 book column and 2 book column (as 3=1+2)
=18%+24%=42% hence b is true
so b is NOT my answer or it is?
no b is not
in d it says 4 or more book
so it comprise of '4' and '5 or more ' book column =12% +4% =16% hence d is also true
while option c has typo i think it should be "only 4% students read 5 or more books"
how does option A work?
oops sorry c is not typo c is false
option a is true \(\large\tt \color{black}{x=\dfrac{50\times100\times24}{12\times100}=100}\)
hence option c is not true
so C is my answer then?
yes i showed u all options
ok, thank you (:
\(\Huge\tt \color{black}{\ddot\smile}\)
Is this right? @mathmath333
For the first problem: A. From the pie chart we can see 12% read 4 books and 24% read 2 books. So the number of students who read 2 books is double the number of students who read 4 books. So if 50 students read 4 books then double that number, 100 students, read 2 books. A is true. B. From the chart what percentage of students did NOT read at least 3 books? That includes percentage of students who read LESS THAN 3 books = percentage that read 2 books + percentage that read 1 book = 24% + 18% = 42%. B is true. C. From the chart only 4% read 5 or more books. It is four percent and NOT four students. Therefore, C is NOT true. D. Percentage that read 4 or more books = Percentage that read 4 books + Percentage that read 5 or more books = 12 + 4 = 16%. So D is true.
For the second problem, the range of the data is the highest value minus the lowest value = 1 - (-5) = 1 + 5 = 6.
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