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Are avid readers more likely to wear glasses than those who read less frequently? 303 men in Ohio were
selected at random and characterized as to whether they wore glasses and whether the amount of reading
they did was above average, average, or below average. The results are presented in the following table:
Amount of reading Yes No
Above average
47 31
Average
51 75
Below averages 32 67
a. What is the proportion of men in the sample who wear glasses?
b. What is the proportion of all above average readers who wear glasses?
Sagot :
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