haleygreene3728

30.01.2020 • 

Mathematics

Plz fast will give !

an education company conducted four separate surveys of students in a city about the subject they found most difficult. each survey randomly selected 100 students in the city. the results are shown in the table.

survey math english science history total
#1 31 25 24 20 100
#2 29 25 25 21 100
#3 30 24 23 23 100
#4 15 50 15 20 100
identify surveys that are likely biased.

based on the unbiased surveys, what percent of the students in the city would say that science is the subject they find most difficult?

Ответ:

davidcortez27

17.01.2022

Mathematics

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#1,4 are biased because the number range is too wide. (include #2 if the question allows)
#1: 31-20 = 11
#2: 29-21 = 8
#3: 30-23 = 7
#4: 50-15 = 35 (OMG that's so biased!)

so if the three surveys are eliminated, then the answer to the second question is 23%.

Hope that helps :)

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Ответ:

Jonah58

22.06.2020

Mathematics

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First you multiply them like normal numbers

24

x

62

48

+

1440

1488

then you notice that the decimal point was moved over two, then you do that to your answer

1488.0=1488

1488.0

148.80

14.88

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