The following table gives the two-way classification of 500 students based on se
ID: 3229526 • Letter: T
Question
The following table gives the two-way classification of 500 students based on sex and whether or not they suffer from math anxiety. Suffer From Math Anxiety
If you randomly select one student from these 500 students, the probability that this selected student is a female is: (round your answer to three decimal places, so 0.0857 would be 0.086) If you randomly select one student from these 500 students, the probability that this selected student suffers from math anxiety is: (round your answer to three decimal places, so 0.0857 would be 0.086) If you randomly select one student from these 500 students, the probability that this selected student suffers from math anxiety, given that he is a male is: (round your answer to three decimal places, so 0.0857 would be 0.086) If you randomly select one student from these 500 students, the probability that this selected student is a female, given that she does not suffer from math anxiety is: (round your answer to three decimal places, so 0.0857 would be 0.086) Which of the following pairs of events are mutually exclusive? No and yes Female and no Male and no Female and yes Female and male Male and yes Are the events "Has math anxiety" and "Person is female" independent or dependent? Detail the calculations you performed to determine this.
sex yes no male 149 91 female 186 74Explanation / Answer
a) probability that this selected student is a female =260/500=0.52
b)probability that this selected student suffers from math anxiety =335/500=0.67
c)probability that this selected student suffers from math anxiety, given that he is a male =149/240=0.621
d) probability that this selected student is a female, given that she does not suffer from math anxiety =74/165=0.448
e) No and yes and Female and male
f)dependent
Has math anxiety" and "Person is female" probabilty =186/500=0.372
which is not equal to probabilty ofHas math anxiety" *probabilty of Person is female"
=(335/500)*(260/500)=0.3484
sex yes no Total male 149 91 240 female 186 74 260 Total 335 165 500Related Questions
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