The mean and standard deviation of a variable x are 36 and 4 respectively. Then the mean and standard deviation of [50 (x/4)], respectively are :
Let x ~ Binomial (5,0.6) and Y ~ Poisson (2) be independent. Then P(xy = 0) equals :
In a negatively skewed distribution
If a continuous random variable x has the probability density function
For a frequency distribution of a discrete variable, the diagram of less than type cumulative frequency is a
It is known from past experience that in a certain plant there are on the average 4 industrial accidents per month. The probability that in a given month there will be less than 4 accidents is : (e4= 0.0183)
