Last year, a person wrote 133 checks. Let the random variable x represent the number of checks he wrote in one day, and assume that it has a Poisson distribution. What is the mean number of checks written per day? What is
the standard deviation? What is the variance?

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?