# probability distribution

#### An electronic chess game has a useful life that is exponential with a mean of 30 months

An electronic chess game has a useful life that is exponential with a mean of 30 months. Determine each of…

#### The measured radius of a circle, R, has pdf

The measured radius of a circle, R, has pdf  \begin{aligned} f(r) &= 6r(1-r),\; 0 < r < 1 \end{aligned}…

#### The first assignment in a statistical computing class involves running a short program. If past experience indicates

The first assignment in a statistical computing class involves running a short program. If past experience indicates that 40% of…

#### Among all the computer chips produced by a certain factory, 6 percent are defective.

Among all the computer chips produced by a certain factory, 6 percent are defective. A sample of 400 chips is…

#### Resistors labeled 100 Omega have true resistances that are between 80 Omega and 120 Omega.

Resistors labeled 100 $\Omega$ have true resistances that are between 80 $\Omega$ and 120 $\Omega$. Let X be the mass…

#### The average cost of an IRS Form 1040 tax filing at Thetis Tax Service is

The average cost of an IRS Form 1040 tax filing at Thetis Tax Service is \\$157.00. Assuming a normal distribution,…

#### The distribution of the SAT scores in math for an incoming class of business students has a mean of 590 and Standard deviation

The distribution of the SAT scores in math for an incoming class of business students has a mean of 590…

#### A cement truck delivers mixed cement to a large construction site. Let x represent the cycle time in minutes for the truck

A cement truck delivers mixed cement to a large construction site. Let x represent the cycle time in minutes for…

#### A psychologist has devised a stress test for dental patients sitting in the waiting rooms. According to this test

A psychologist has devised a stress test for dental patients sitting in the waiting rooms. According to this test, the…

#### If electricity power failures occur according to a Poisson distribution with an average of 3 failures

If electricity power failures occur according to a Poisson distribution with an average of 3 failures every twenty weeks, calculate…