Statistics

Solved (Free): Let $Y_1, Y2, \cdots, Y_n$ be independent random variables such that each $Y_i$ has a gamma distribution with parameters

Let $Y_1, Y2, \cdots, Y_n$ be independent random variables such that each $Y_i$ has a gamma distribution with parameters $\alpha_i$…

Solved: The time between release from prison and the commission of another crime is uniformly distributed between 0 and 5 years for a high-risk group

The time between release from prison and the commission of another crime is uniformly distributed between 0 and 5 years…

Solved: The article “Modeling Sediment and Water Column Interactions for Hydrophobic Pollutants”

The article "Modeling Sediment and Water Column Interactions for Hydrophobic Pollutants" (Water Research [1984]: 1169-1174) suggests the uniform distribution on…

Solved: The hardness of a piece of ceramic is proportional to the firing time. Assume that a rating system has been devised to rate the hardness of a ceramic piece

The hardness of a piece of ceramic is proportional to the firing time. Assume that a rating system has been…

Solved: Suppose that a class in elementary statistics was allocated 15 minutes to complete a quiz. It can be assumed that the time X it takes to complete

Suppose that a class in elementary statistics was allocated 15 minutes to complete a quiz. It can be assumed that…

Solved (Free): The following data represents viscosity measurements from a batch chemical process. The data is assumed to be normally distributed

The following data represents viscosity measurements from a batch chemical process. The data is assumed to be normally distributed. The…

Solved: The useful life of an electrical component is exponentially distributed with a mean of 2,500 hours

The useful life of an electrical component is exponentially distributed with a mean of 2,500 hours. a. What is the…

Solved (Free): A course has two quizzes of equal weight, a midterm examination that has twice the weight of a quiz

A course has two quizzes of equal weight, a midterm examination that has twice the weight of a quiz, and…

Solved (Free): A western city has 18 police officers eligible for promotion. Eleven of the 18 are Hispanic

A western city has 18 police officers eligible for promotion. Eleven of the 18 are Hispanic. Suppose only five of…

Solved (Free): Random samples of households were selected from each of three regions in a large metropolitan area. The number of households selected from

Random samples of households were selected from each of three regions in a large metropolitan area. The number of households…