jtsizemore
18.03.2021 •
Mathematics
Are avid readers more likely to wear glasses than those who read less frequently? A sample of people in Ohio were selected at random and characterized as to whether they wore glasses (Yes) or did not wear glasses (No). They were also asked about the amount of reading they did (Above average, Average, or Below average). The results are presented in the following table:
Yes No Total
Above average 45 30 75
Average 44 73 117
Below average 28 75 103
Total 117 178 295
What percent of people do not wear glasses?
What percent of people are average readers and wear glasses?
What percent of below average readers wear glasses?
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Ответ:
A.90´.
B.190´.
step-by-step suilton:
A.34+56=90´.
B.100+90=190´.