# Month: May 2021

#### 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 (Free): The amount of protein (in grams) for a variety of fast-food sandwiches is reported here 2

The amount of protein (in grams) for a variety of fast-food sandwiches is reported here. 23 30 20 27 44…

#### 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 : 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 lifetime $X$ of a device is an exponential random variable with mean = $1/R$

The lifetime $X$ of a device is an exponential random variable with mean = $1/R$. Suppose that due to irregularities…

#### 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…