Math

posted by Amanda

Suppose a baseball player had 211 hits in a season. In the given probability distribution, the random variable X represents the number of hits the player obtained in the game.
x P(x)
0 0.1879
1 0.4106
2 0.2157
3 0.1174
4 0.0624
5 0.0060
a.) Compute and interpret the mean of the random variable X
b.) Compute the standard deviation of the random variable X.

  1. Sarah

    To calculate the mean we add up all of the numbers and divide by the total number amount for e.g. you have 5 numbers here. Add them up and divide by 5

    b) The standard deviation is that complicating equation. You can check this on google to get the exact formula and i think if you type in standard deviation calculator you can plug in the numbers on the website and check this with your answer

  2. Kuai

    µ= x * p(x)
    = 0(0.11879) + 1( 0.4106) + 2(0.2157) + 3(0.1174) + 4 (0.0624) + 5(0.0060) = ?

    σ^2 = x^2 * p(x)
    = 0^2(0.11879) + 1^2(0.4106) + 2^2(0.2157) + 3^2(0.1174) + 4^2(0.0624) + 5^2(0.0060) = ?

    sd = sqrt( σ^2- (µ^2))

  3. Abby

    Suppose a baseball player had 212 hits in a season. In given probability distribution, the random variable X represents the number of the player obtained in a game
    0 0.0908
    1 0.4677
    2 0.2988
    3 0.1163
    4 0.0147
    5 0.0117

Respond to this Question

First Name

Your Answer

Similar Questions

  1. math

    Two minor league baseball players got a total of 252 hits in the season . Washington had 16 more than Sanchez find the number of hits for each player
  2. math

    the professinal base ball is 162 games.a player was at bat 3 times in each game, and he played 2/3 of the game. a.how many times was the player at bat during the season?
  3. math

    the regular season for professinal baseball is 162 games.a player was bat in each game ,and he played in 2/3 timesof the game. a. how many times was the player at bat during the season?
  4. statistics

    Suppose a basketball player, Player A made 80% of her free throws last season and that she continues to shoot free throws at the same rate. Assume that free throw attempts are independent. Let the random variable X be the number of …
  5. Statistics

    Suppose a basketball player, Player A, made 80% of her free throw attempts last season and that she continues to shoot free throws at the same rate. Assume that free throw attempts are independent. Let the random variable X be the …
  6. Algebra

    A baseball player's batting average is the number of hits the player has divided by the number of at-bats. At the beginning of a game, a player has a batting average of .360. During the game, the player gets 3 hits during 5 at-bats, …
  7. math probability question

    If a player rolls 2 dice and gets a sum of 3 or 11 he collects $15. if he gets a sum of 12 he gets $3. the cost to play the game is $2. let x be the net money gained by the player. a. construct the prob distribution of the random variable …
  8. math

    A baseball player's batting average is calculated by dividing the number of times a player got a hit by the total number of times the player was at bat. It is expressed as a decimal rounded to three decimal places. After the first …
  9. Math

    A baseball player's batting average is the number of hits the player has divided by the number of at-bats. If a baseball player has a batting average of .275 and has 80 at bats, how many hits has he made?
  10. math

    Two minor league baseball players got a total of 300 hits. Washington had 14 more hits than Sanchez. Find the number of hits for each player.

More Similar Questions