Math

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. 0
  2. 12
asked by Amanda
  1. 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

    posted by Sarah
  2. 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))

    posted by Kuai
  3. 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

    posted by Abby

Respond to this Question

First Name

Your Response

Similar Questions

  1. 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
  2. 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? b.the player hit 0.250,which means he got a
  3. 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
  4. 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
  5. 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
  6. MATH HELP!!!!!!!!

    orlando likes baseball. He's a good fielder, but he wants to improve his batting average. currently .200 (or 20%) for the first part of the season. he practiced a lot with a friend and managed to hit 10 out of 20 times that he was
  7. Math

    If a baseball player has a batting average of 0.420, what is the probability that the player will get at least 2 hits in the next four times at bat?
  8. Probability

    Can someone please help me solve this problem? If the probability of a baseball player's getting it in one time at bat is 0.326, find the probability that the player gets no hits in 4 times at bat. Thank you!
  9. maths

    orlando likes baseball. He's a good fielder, but he wants to improve his batting average. currently .200 (or 20%) for the first part of the season. he practiced a lot with a friend and managed to hit 10 out of 20 times that he was
  10. Grade 12 Data Management

    A baseball player has had 14 hits in 60 times at bat in the last 20 games. How many hits does the batter need in her next ten at bats to increase the probability of her getting a hit to 0.300?

More Similar Questions