Are avid readers more likely to wear glasses than those who read less frequently? three hundred 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. glasses? yes no amount of reading above average average below average total 47 48 31 126 26 78 70 174 suppose we wish to test the null hypothesis that there is no association between the amount of reading and wearing glasses. under the null hypothesis, what is the numerical value of the chi-square statistic? (2 points) a) 2 b) 8.65 c) 21 d) 30.7

Option C

Step-by-step explanation:

Given that three hundred 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.

H0: There is no association between the amount of reading and wearing glasses

Ha: There is  association between the amount of reading and wearing glasses

(Two tailed chi square test)

 2512.512.5

Above avg.Avg.Below avgTotal

Yes474831126

No267870174

73126101300

Contingency table    

Above avg.Avg.Below avgTotal

Yes30.6652.9242.42126

No42.3473.0858.58174

73126101300

Chisquare8.7082713630.4574149663.07440829812.24009463

6.3059896080.3312315272.2262956648.863516799

   21.10361143

df = 2

Test statistic = 21

Option c

dd

step-by-step explanation:

dd