statistics

The probability that a certain door is locked is.6. The key to the door is one of five unidentified keys hanging on a key rack. Two keys are randomly selected before approaching the door. What is the probability that the door may be opened without returning for another key?

  1. 👍 0
  2. 👎 0
  3. 👁 104
asked by Sharon
  1. 2/5 * .6 + .4= ..

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. English

    1. I was angry that the door was locked. 2. I was angry the door was locked. 3. I was angry because the door was locked. =================== Can we omit 'that' as in #2? Does #1 mean #3? In Sentence 1, Is "that the ...' an

    asked by rfvv on December 25, 2015
  2. Math

    You come home after dark, and porch light is out. You cannot tell which key opens the door.. you randomly try the 5 keys on your ring, 2 keys open your door. Draw a tree diagram for the experiment & Find the probability of opening

    asked by Angie on November 24, 2012
  3. Math Probability

    A locked door is opened by turning the knobs shown below to a particular combination of numbers. How many possible number combinations are there for opening the locked door? There is a picture of 3 knobs, each with four numbers

    asked by Lyla on June 5, 2018
  4. Math

    I need help with this questions. a). An overhead garage door has two springs, one on each side of the door. A force of 15 pounds is required to stretch each spring 1 foot. Because of a pulley system, the springs stretch only

    asked by Danielle on April 1, 2008
  5. Physics

    There is a door that is 1.0 m wide and can rotate about a vertical axis without friction. The door’s mass is 15 kg and is free to swing open. Someone fires a 10 g bullet at 400 m/s into the exact center of the door,

    asked by Andrea on December 2, 2012
  6. Physics

    trap door of length and width 1.65 m is held open at an angle of 65.0 degree with respect to the floor. A rope is attached to the raised edge of the door and fastened to the wall behind the door in such a position that the rope

    asked by Lorax on March 25, 2012
  7. Physics

    trap door of length and width 1.65 m is held open at an angle of 65.0 degree with respect to the floor. A rope is attached to the raised edge of the door and fastened to the wall behind the door in such a position that the rope

    asked by Lorax on March 25, 2012
  8. physics

    To leave Nicholson, you exit via the door to the quad. The door is 40 inches wide and has a mass of 200 kg. You push the door with a perpendicular force of 52.61N exactly 0.86m away from the hinge. This generates the minimum

    asked by Kim on November 2, 2015
  9. Physics

    A person exerts a force of 28 N on the end of a door 84 cm wide. What is the magnitude of the torque if the force is exerted a. perpendicular to the door? b. at a 45 degree angle to the face of the door? c. parallel to the door?

    asked by Anon on December 10, 2017
  10. PHYSICS!

    A horizontal force of 10 N is applied to the outer edge of a door at an angle of 32° to the door, as shown in a view from the top looking down. The width of the door is 0.80 m. The magnitude of the torque of this force on the

    asked by Spencer on June 9, 2012

More Similar Questions