In Exercise 6 of Chapter 2, data on numbers of publications were given for an SRS of

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In Exercise 6 of Chapter 2, data on numbers of publications were given for an SRS of 50 faculty members. Not all departments were represented, however, in the SRS.
The SRS contained several faculty members from psychology and from chemistry, but none from foreign languages. The following data are from a stratified sample of faculty, using the areas biological sciences, physical sciences, social sciences, and humanities as the strata.
In Exercise 6 of Chapter 2, data on numbers of

The frequency table for number of publications in the strata is given below.

In Exercise 6 of Chapter 2, data on numbers of

a. Estimate the total number of refereed publications by faculty members in the college, and give the standard error.
b. How does your result from (a) compare with the result from the SRS in Exercise 6 of Chapter 2?
c. Estimate the proportion of faculty with no refereed publications, and give the standard error.

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