math

Suppose that the population of a certain townis made up of 45% of men and 55% of women. Of the men, 40% wear glasses, abd of the women, 20% wear glasses. Given that a person chosen at random from the town wears glasses, what is the probability that the person is a woman?

  1. 👍
  2. 👎
  3. 👁
  1. Probability: 11 out of 29;
    or 37.9310345%.

    Method: Take a sample of 100.
    45 are men; 40% or 18 men wear glasses
    55 are women; 20% or 11 women wear glasses.
    So out of 100, 18+11=29 wear glasses out of which 11 are women.
    Probability: 11 out of 29

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. us history

    1. What was unusual about the people who made up the population of St. Augustine, Florida, in the early 1800s? A. Most people who settled in St. Augustine in the early 1800s were Cubans who were escaping from an autocratic

  2. statistics

    Suppose a random sample of size 50 is selected from a population with σ = 10. Find the value of the standard error of the mean in each of the following cases (use the finite population correction factor if appropriate). a. The

  3. Pre calc

    The general function P(t)= 640ekt is used to model a dying bird population, where Po = 640 is the initial population and t is time measured in days. Suppose the bird population was reduced to one quarter of its initial size after

  4. Economics (39)

    Suppose a random sample of size 40 is selected from a population with = 9. Find the value of the standard error of the mean in each of the following cases (use the finite population correction factor if appropriate). a. The

  1. algebra

    the number of bacteria in a certain population is predicted to increase according to a continuous exponential growth model at a relative rate of 6% per hour. suppose that a sample culture has an initial population of 94 bacteria.

  2. math

    suppose the population of a town increases by 3% each year. the population of the town today is 25,000. use compound interest table to find its population ten years from now. (must give the answer to the nearest thousand)

  3. math

    Suppose that the population of a town is described by P=0.16t^2+7.2t+100, where P is the population in thousands and t is the time in years, ( with t=o representing the year 2000). A. what will the population be in 2010? B. what

  4. Stats

    Suppose a random sample of size 58 is selected from a population with σ = 9. Find the value of the standard error of the mean in each of the following cases (use the finite population correction factor if appropriate). A) The

  1. algebria

    Suppose the population of deer in a state is 10,280 and is growing 1% each year. Predict the population after 5 years

  2. Statistics

    Suppose that, in fact, the blood cholesterol level of all men aged 20 to 34 follows the normal distribution with mean of u = 188 milligrams per deciliter (mg/dl) and standard deviation = 41 mg/dl. 1. Choose an SRS of 100 men from

  3. statistics

    Suppose that, in fact, the blood cholesterol level of all men aged 20 to 34 follows the normal distribution with mean of u = 188 milligrams per deciliter (mg/dl) and standard deviation = 41 mg/dl. 1. Choose an SRS of 100 men from

  4. math

    the population of Smallville in the year 1890 was 6250.assume the population increased at a rate of 2.75% per year. predict when the population reached 50,000 I'm not suppose to use logs to find the answer :(

You can view more similar questions or ask a new question.