# Month: March 2021

#### Solved (Free): The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 91 inches

The annual precipitation amounts in a certain mountain range are normally distributed with a mean of 91 inches, and a…

#### Solved (Free) : In a market study for Target, a researcher found that 70% of customers are repeat customers

In a market study for Target, a researcher found that 70% of customers are repeat customers. If 14 customers are…

#### Solved (Free): A factory owns 10 machines. On any particular day, each machine is operational with probability 0.7

A factory owns 10 machines. On any particular day, each machine is operational with probability 0.7, independent of the status…