Question

The data recresent the results for a test fx a certain discesa. Assume che ritual from the group is ratasty sieded. Fedtreprobability of getting someone who tests positive, given that he or she had the disease.The individual actuallyhad the diseaseYesNoPositive 13218Negative 10140The sectability is approximativy Round to three decimal places as reacties)

Answer 1

The total sum of students given four quarters = The student who spent the money on gum plus the students that kept the money.

$34+17=51$

The total sum of students given four quarters is 51 students.

The student who spent the money on gum is 34 students.

The probability of the students that spent the money, given that the students were given four quarters,

$\frac{\text{The probability of students that spent the money}}{\text{The total sum of students given four quarters}}=\frac{34}{51}$

The probability is,

$\frac{34}{51}=\frac{2}{3}=0.66667\approx0.667(3\text{ decimal places)}$

The probability is 0.667.