A nonprofit organization conducted a survey of 2110 metropolitan-area teachers r

Question

A nonprofit organization conducted a survey of 2110 metropolitan-area teachers regarding their beliefs about educational problems. The following data were obtained:

What is the probability that a teacher selected at random from this group said that lack of parental support is the only problem hampering a student's schooling?

900 said that lack of parental support is a problem. 850 said that abused or neglected children are problems. 660 said that malnutrition or students in poor health is a problem. 100 said that lack of parental support and abused or neglected children are problems. 100 said that lack of parental support and malnutrition or poor health are problems. 130 said that abused or neglected children and malnutrition or poor health are problems. 30 said that lack of parental support, abuse or neglect, and malnutrition or poor health are problems.

Explanation / Answer

Number of people said that lack of parental support is a problem is 900

Total number is 900+850+660+100+100+130+30=2770

Probability is 900/2770=0.3249

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