Example 3-59. Data on the readership of a certain magazine show that the proportion of 'male readers under 35 is 0-40 and over 35 is 0-20. If the proportion of readers under 35 is 0-70, find the...

Extracted text: Example 3-59. Data on the readership of a certain magazine show that the proportion of 'male readers under 35 is 0-40 and over 35 is 0-20. If the proportion of readers under 35 is 0-70, find the propórtion of subscribers that are 'females over 35 years'. Also calculate the probability that a randomly selected male subscriber is under 35 years of age.