Answer Happy

A midterm is given to 1000 students and the class mean score of the entire 1000 students needs to be calculated as soon as possible. A statistics professor says it would be fine to grade 100 tests and use the sample mean of the 100 scores as an approximated class mean. This is true because of O Law of total probabilities O Law of unconcious statisticians O Law of large number O Central limit theorem

= There are three random variables: X, Y, and Z where Y = X - 10 and Z = 100X. Which one is more highly correlated to X between Y and Z? O Y is more highly correlated to X than Z. Z is more highly correlated to X than Y. Both Y and Z have the same correlation to X. We can't determine. We need more information.

Which of the following is the most appropriate distribution to model the total number of patients treated at a doctor's office for a year? O Normal O Uniform Geometric O Erlang

Which of the following is the most appropriate distribution to model the number of cars that arrive at a toll booth on NJ highway for a day? Binominal O Exponential O Poisson O Negative Binomial