Suppose T(4) follows an Erlang distribution with n=4 and λ=0.4. Compute each of the following: The expected value of T(4) equals
The standard error of T(4) equals
P(T(4)≤20)=

X+y=-4 x-y=2 use elimination with adding and subtraction

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a

Amayoral candidate would like to know her residents’ views on a public open space before the mayoral debates. she asks only the people in her office. her co-workers are an example of a census population convenience sample simple random sample