4. The probability that an individual is left-handed is 0.16. In a class of 10 students, what is the mean and standard deviation of the number of left- handers in the class? A) mean: 10; standard deviation: 1.16 B) mean: 1.6; standard deviation: 1.16 C) mean: 1.6; standard deviation: 1.26 D) mean: 10; standard deviation: 1.26