The following data are the number of publications from four faculties in a college.

Using the faculties as the strata;

a. Estimate the total number of refereed publications by faculty members in the college, and give the standard error.

b. Estimate the proportion of faculty with no refereed publications, and give the standard error.

Stratum Number of faculty members in stratum Number of faculty members in sample

Biological Sciences 102 7

Physical Sciences 310 19

Social Sciences 217 13

Humanities 178 11

Total 807 50

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

Number of Faculty Members

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