A random variable represents the number of times a sum of 7 or 11 comes up in ten rolls of a pair of dice. (A) Find the mean and standard deviation of the random variable. (B) Use a graphing calculator to simulate 100 repetitions of the binomial experiment, and compare the mean and standard deviation of the numbers of 7 ’ s or 11 ’ s from the simulation to the answers for part (A).
A random variable represents the number of times a sum of 7 or 11 comes up in ten rolls of a pair of dice. (A) Find the mean and standard deviation of the random variable. (B) Use a graphing calculator to simulate 100 repetitions of the binomial experiment, and compare the mean and standard deviation of the numbers of 7 ’ s or 11 ’ s from the simulation to the answers for part (A).
Solution Summary: The author calculates the mean and standard deviation of the random variable which represents the number of times a sum of 7 or 11 comes up in ten rolls.
A random variable represents the number of times a sum of
7
or
11
comes up in ten rolls of a pair of dice.
(A) Find the mean and standard deviation of the random variable.
(B) Use a graphing calculator to simulate
100
repetitions of the binomial experiment, and compare the mean and standard deviation of the numbers of
7
’
s
or
11
’
s
from the simulation to the answers for part (A).
find the zeros of the function algebraically:
f(x) = 9x2 - 3x - 2
a small pond contains eight catfish and six bluegill. If seven fish are caught at random, what is the probability that exactly five catfish have been caught?
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Discrete Distributions: Binomial, Poisson and Hypergeometric | Statistics for Data Science; Author: Dr. Bharatendra Rai;https://www.youtube.com/watch?v=lHhyy4JMigg;License: Standard Youtube License