Solution:
Given that,
n = 10
p = 0.2
q = 1 - p = 1 - 0.2 = 0.8
Using binomial formula ,
= n * p * q
= 10 * 0.2 *0.8
= 1.26
Option 1.26 is correct.
Question 4 (1 point) Calculate the standard deviation for a binomial variable if n= 10 and...
(1 point) if X is a binomial random variable, compute the mean, the standard deviation, and the variance for each of the following cases: (a) n = 5, p = 0.1 u= O2 = 0= (b) n = 3, p = 0.5 H = O2 = o= (c) n = 3, p = 0.8 (d) n = 5, p = 0.7 u = 02 = =
Calculate the standard deviation for a binomial variable if n= 10 and p=.2
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Let x be the binomial random variable with n=10 and p = 9 a. Find P(x = 8) and create a cumulative probability table for the distribution. b. Find P( x is less than or equal to 7) and P(x is greater than 7) c. Find the mean, u, the standard deviation, o, and the variance. d. Does the Empirical rule work on this distribution for data that is within one, two or three standard deviations of the mean? Explain....
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