1. Questions

Statistics

. Two thousand randomly selected adults were asked whether or not they have ever shopped on the internet. The following table gives a two-way classification of the responses obtained.
Have shopped Have never shopped
Male 500 700
Female 300 500
Suppose one adult is selected at random from these 2000 adults. Find the following probabilities
a) P(has never shopped on the Internet and is a male)
b) P(has shopped on the Internet and is a female)

  1. 👍
  2. 👎
  3. 👁
David

  1. A) 0,35
    B) 0,15

    1. 👍
    2. 👎
    Lukas

  2. 0,35

    1. 👍
    2. 👎
    Anonymous

  4. a. 7/12

    b. 3/8

    1. 👍
    2. 👎
    lol

Respond to this Question

First Name

Your Response

Similar Questions

  1. math (stats)

    According to Masterfoods, the company that manufactures M&M’s, 12% of peanut M&M’s are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. [Round your answers to three decimal places, for

  2. statistics

    The random variable W can take on the values of 0, 1, 2, 3, or 4. The expected value of W is 2.8. Which of the following is the best interpretation of the expected value of random variable W? A. A randomly selected value of W must

  3. Statistics

    The body temperatures of adults are normally distributed with a mean of 98.6 degree F and a standard deviation of 0.60 degree F. If 36 adults are randomly selected, find the probability that their mean body temperature is greater

  4. math

    8 basketball players are selected to play in a special game.the players will be selected from a list of 27 players .if the players are selected randomly ,whats the probability that the 8 tallest players will be selected.

  1. stat

    for randomly selected adults, IQ scores are normally distributed with a standard deviation of 15. the scores of 14 randomly selected college students are listed below. use a 0.10 significance level to test the claim that the

  2. Statistics

    One of the questions in the Pew Internet & American Life Project asked adults if they used the Internet, at least occasionally. The results showed that 454 out of 478 adults aged 18 - 29 answered yes; 741 out of 833 adults aged 30

  3. math/probability

    According to Masterfoods, the company that manufactures M&M’s, 12% are brown, 15% are yellow, 12% are red, 23% are blue, 23% are orange and 15% are green. Round your answers to three decimal places. a) Compute the probability

  4. Statistics

    The average age of chemical engineers is 37 years with a standard deviation of 4 years. If an engineering firm employs 25 chemical engineers, find the probability that the average age of the group is greater than 38.2 years old.

  1. prealgebra

    One letter is randomly selected from the word PRIME and one letter is randomly selected from the word MATH. What is the probability that both letters selected are vowels?

  2. Economics (36)

    For borrowers with good credit scores, the mean debt for revolving and installment accounts is $15,015 (BusinessWeek, March 20, 2006). Assume the standard deviation is $3,730 and that debt amounts are normally distributed. a. What

  3. math

    Ten thousand raffle tickets are sold. 1 first prize of $1800, 3 second prizes of $600 each, and 9 third prizes of $200 each are to be awarded, with all winners selected randomly. If you purchase one ticket, what are your expected

  4. math

    In a large population of adults, the mean IQ is 112 with a standard deviation of 20. Suppose 200 adults are randomly selected for a market research campaign. The probability that the sample mean IQ is greater than 110 is...?

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