Find the Indicated Mean

question 82

Multiple Choice

Find the indicated mean.
-A classical example of the Poisson distribution involves the number of deaths caused by horse kicks to men in the Prussian Army between 1875 and 1894. Data for 9 corps were combined for the 20-year period, and the 180
Corps-years included a total of 135 deaths. Suppose the Poisson distribution will be used to find the probability
That a randomly selected corps-year has more than 2 deaths. Find the mean of the appropriate Poisson
Distribution (the mean number of deaths per corps-year) . Round your answer to the nearest hundredth.

• A) 0.75
• B) 6.75
• C) 1.33
• D) 15

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Definitions:

Soil Layer

A distinct layer within the soil profile, such as topsoil or subsoil, characterized by specific physical, chemical, and biological properties.

A Horizon

The A Horizon refers to the top layer of soil rich in organic matter and minerals, essential for plant growth.

O Horizon

The uppermost layer of soil, rich in organic material, such as decomposed leaves and plants, contributing to soil fertility and health.

C Horizon

The layer of soil beneath the B horizon, composed of larger unweathered rocks and mineral particles, and is less affected by the soil-forming processes.