Question

The backoff torque required to remove bolts in a steel plate is
rated as high, moderate, or low. Historically, the probability of a
high, moderate, or low rating is 0.61, 0.25, or 0.14, respectively.
A sample of 15 bolts are selected for testing. Let X,
Y, and Z denote the number of bolts that are
independently rated as high, moderate, and low, respectively.
Determine the following probabilities. |

(a) | P(X = 11, Y = 2, Z =
2) |

(b) | P(X = 7 | Y =
4) |

Answer #1

Based on the number of voids, a ferrite slab is classified as
either high medium or low. Historically, 5% of the slabs are
classified as high, 83% as medium and 12% as low. A sample of 20
slabs is selected for testing. Let X, Y, and
Z denote the number of slabs that are independently
classified as high, medium, and low, respectively. Determine the
following. Round your answers to four decimal places (e.g.
98.7654).
(a) P(X = 1, Y =...

Based on the number of voids, a ferrite slab is classified as
either high medium or low. Historically, 5% of the slabs are
classified as high, 80% as a medium, and 15% as low. A sample of 20
slabs is selected for testing. Let X, Y, and
Z denote the number of slabs that are independently
classified as high, medium, and low, respectively. Determine the
following. Round your answers to four decimal places (e.g.
98.7654).
(a) P(X = 1, Y...

Based on the number of voids, a ferrite slab is classied as
either high, medium, or low. Historically, 5% of the slabs are
classied as high, 90% as medium, and 5% as low. A sample of 20
slabs is selected for testing. Let X; Y; and Z denote the number of
slabs that are independently classied as high, medium, and low,
respectively
a. What is the joint probability distribution of X; Y; and Z and
what are it's parameteres (n,p1...)?...

1.
Let A denote the event that a particular stock
outperforms the market and let B denote the event that the
economy is experiencing rapid economic growth. Suppose that
P(A) = 0.40, P(B) = 0.50 and
P(A/B) is 0.20. Therefore, the two
events A and B are probabilistically
independent.
True
False
2.
A manager estimates that demand for their company's product will
increase within the next 2 quarters with probability 0.55. This is
an example of a
a.
objective probability...

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