From a city population, the probability of selecting a male smoker is 2/5. If a male is first selected, the the probability that he is a smoker is*4/52/53/51/5

According to the Cancer Research Institute, smoking causes 92% of all lung cancers in men. Find the probability of two randomly selected men having lung cancer caused by smoking.

At a local college, 297 of the male students are smokers and 693 are non-smokers. Of the female students, 310 are smokers and 690 are non-smokers. A male student and a female student from the college are randomly selected for a survey. What is the probability that both are non-smokers?Do not round your answer.

In a certain liberal arts college with about 10,000 students, 40% are males. If two students from this college are selected at random, what is the probability that they are both males? 0 0.16 0.80 0.64 0.25

In the year 2002 the population of a town was 324000people. Out of these, 55%were females and 2/5of the town population were adults above 25years. If a person was picked at random from this town during that year, find the probability that the person was (a)below 25years (b)male and above 25years

Based on a recent study, the probability that someone is a smoker decreases with the person's income. If someone's family income is x thousand dollars, then the probability (expressed as a percentage) that the person smokes is approximately y = −0.31x + 40 (for 10 ≤ x ≤ 100).† Round your answers to the nearest percent.(a)Graph this line on the window [0, 100] by [0, 50].The x y-coordinate plane is given. The line enters the window at y = 40 on the positive y-axis, goes down and right, passes through the point (100, 24), and exits the window in the first quadrant. The x y-coordinate plane is given. The line enters the window at y = 40 on the positive y-axis, goes down and right, passes through the point (100, 36.9), and exits the window in the first quadrant. The x y-coordinate plane is given. The line enters the window at y = 40 on the positive y-axis, goes down and right, passes through the point (100, 9), and exits the window in the first quadrant. The x y-coordinate plane is given. The line enters the window at y = 40 on the positive y-axis, goes down and right, and exits the window at approximately x = 98 on the positive x-axis.(b)What is the probability that a person with a family income of $30,000 is a smoker? [Hint: Since x is in thousands of dollars, what x-value corresponds to $30,000?]