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Chapter 1: Q9E (page 12)

In a famous experiment carried out in 1882, Michelson,and Newcomb obtained 66 observations on the time it took for light to travel between two locations in Washington, D.C. A few of the measurements(coded in a certain manner) were 31, 23, 32, 36, 22, 26, 27, and 31.

a. Why are these measurements not identical?

b. Is this an enumerative study? Why or why not?

Short Answer

Expert verified

a.Nonidenticalmeasurements are because of the errors such as recording error, measurement error etc.

b.The study is not enumerative.

Step by step solution

01

Given information

The number of observations Michelson and Newcomb obtained on the time it took for the light to travel between two locations is 66.

A few measurements that were coded in a certain manner are 31,23,32,36,22,26,27, and 31.

02

Explain the reason for nonidentical measurements.

a.

The provided measurements are nonidentical because ofcertain errorssuch as measurement error, changing of the environment when recoding the time, recoding error etc.

03

Check whether the study is enumerative.

b.

The study is said to beenumerativeif the population from which the sample is selected is finite and identifiable.

In the provided scenario, the population data is not provided. Therefore, it is not an enumerative study.

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