A microbiologist-wants to estimate the concentration of a

Chapter 4, Problem 11E

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QUESTION:

A microbiologist wants to estimate the concentration of a certain type of bacterium in a wastewater sample. She puts a 0.5 mL sample of the wastewater on a microscope slide and counts 39 bacteria. Estimate the concentration of bacteria, per mL, in this wastewater, and find the uncertainty in the estimate.

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QUESTION:

A microbiologist wants to estimate the concentration of a certain type of bacterium in a wastewater sample. She puts a 0.5 mL sample of the wastewater on a microscope slide and counts 39 bacteria. Estimate the concentration of bacteria, per mL, in this wastewater, and find the uncertainty in the estimate.

ANSWER:

Solution

Step 1 of 2

Here we have to estimate the concentration of bacteria in a wastewater

Let X represents the bacteria in 0.5 ml

Let Represents the true concentration in one ml

Then XPoisson(0.5)

The observed value of x is 39


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