Question discussion

The variance of a binomial random variable with n = 20 and p = 0.3 is

1370Medium DSSSB TGT Computer Science 0 replies 1 views
0

The variance of a binomial random variable with n = 20 and p = 0.3 is

  • A1.4
  • B14
  • C6
  • D4.2
Correct answer: D

Explanation

Variance = npq = 20 × 0.3 × 0.7 = 4.2.

Discussion 0

Nobody has replied yet. Start the discussion!