Math- important!!!

Samantha is a baseball player, she has a batting average of 0.280.
a) find the probability that at least 3 hits in her next 5 times at bat (12 marks)
b)what is Samantha's expected number of hits in her next 10 times at bat? (3 marks)

  1. 👍
  2. 👎
  3. 👁
  1. Use binomial distribution, p=0.28, q=(1-0.28)=0.72
    A) n=5
    =3C5*p^3*q^2 + 4C5*p^4*q^1 + 5C5*p^5*q^0
    =10(0.28^3)(0.72^2) + 5(0.28^4)(0.72) + 1(0.28^5)(0.72^0)

    Use your calculator to find the answer for (A)

    Expected value for binomial distribution with n=10, p=0.28, q=0.72 is npq

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    A baseball player uses a pitching machine to help him improve his batting average. He places the 43.4 kg machine on a frozen pond. The machine fires a 0.0546 kg baseball horizontally at a speed of 44.8 m/s. What is the magnitude

  2. Physics

    2) The baseball player throws a curve ball that reaches the catcher in 0.60 seconds. The ball curves because it is spinning at an average angular velocity of 330 rev/min (assumed constant) on its way to the catcher's mitt. What is

  3. Physics

    A 96.3-kg baseball player slides into second base. The coefficient of kinetic friction between the player and the ground is μk = 0.619. (a) What is the magnitude of the frictional force? (b) If the player comes to rest after 1.00

  4. Physics Energy

    A baseball player puts a baseball on a batting tee. The baseball bat is able to deliver 4.0x10^5 W of power and is in contact with the ball for 0.70 ms and a distance of 1.4 cm. The mass of the ball is 145 g. What is the next

  1. physics

    A 62.0-kg baseball player slides 3.40 m from third base w/ a speed of 4.35 m/s. If the player comes to rest in third base , (a) how much work was done on the player by friction? (b) what was the coefficient of the kinetic friction

  2. Physics

    A baseball player slides into third base with an initial speed of 3.8m/s. If the coefficient of kinetic friction between the player and the ground is 0.40, how far does the player slide before coming to rest?

  3. Algebra 2

    A baseball player swings and hits a pop fly straight up in the air to the catcher. The height of the baseball in meters t seconds after it is hit is given by a quadratic function h(t) = −5t^2 + 10t + 1. What is the maximum

  4. English

    Which sentence contains a gerund? 1.Some baseball teams are successful because they acquire players reaching for their highest potential. 2.The number one leader in runs scored for his team is batting first in today's game. 3.A

  1. PHYSICS!!

    Two basketball players collide head on. play a weighs 80 kg and is travelling 2.5m/s to the right while player b weighs 68 kg and is travelling 1.2 m/s to the left. after collision player a is travelling at 1.0 m/s to the right.

  2. physics

    A 0.280-kg volleyball approaches a player horizontally with a speed of 15.0 m/s. The player strikes the ball with her fist and causes the ball to move in the opposite direction with a speed of 22.0 m/s. a)what impulse is delivered

  3. physics

    as a baseball player strikes the ball with his batt the 1kg bat applies an average force of 250N on the .15kg baseball for .2 seconds. A) what is the force applied by the baseball on the bat? what is the acceleration of the

  4. Physics

    A baseball player dives into third base with a speed of 7.90 m/s. If the coefficient of friction between the player and the ground is 0.41, how far does the player slide before coming to rest?

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