indicate the units to the final answer if any Draw the necessary graph if any. Round off to four decimal places or in lowest term if your answer is in fraction. B. Construct the cumulative...

indicate the units to the final answer if any

Draw the necessary graph if any.

Round off to four decimal places or in lowest term if your answer is in fraction.

Extracted text: B. Construct the cumulative distribution function table ´ C. Construct histogram D. Find the E(X), V(X), standard deviation


Extracted text: 4. A mail-order computer business has six telephone lines. Let X denote the number of lines in use at a specified time. Suppose the pmf of X is as given in the accompanying table. 1 2 3 4 P(X=x) 0.10 0.15 0.20 a 0.20 0.06 0.04