40% of a country's residents have allegies. a test for allergies correctly diagnoses the presence of an allergy in 85% of the people who have one and correctly diagnoses its absence in 75% of the people who don't. Find the probability that a person who tests positive actually has an allergy.

The frequency table shows the results of a survey comparing the number of beach towels sold for full price and at a discount during each of the three summer months. the store owner converts the frequency table to a conditional relative frequency table by row. which value should he use for x? round to the nearest hundredth. 0.89 0.90 0.92 0.96