Dandelion seeds fall into a garden with area 4.0 m2 with an average density of 0.9/m2. Find , the expectation, the variance, the standard deviation,

Dandelion seeds fall into a garden with area 4.0 m2 with an average density of 0.9/m2.
Find Λ, the expectation, the variance, the standard deviation, the coefficient of variation, and the mode of Poisson distributions with the above values of λ and t.