A statistics department at a large university maintains a tutoring service for students in its introductory service courses. The service has been staffed with the expectation that 40 % of its clients would be from business statistics courses, 30 % from engineering statistics courses, 20 % from social sciences statistics courses, and 10% from agricultural statistics courses. A random sample of 120 clients revealed 52 from business, 38 from engineering, 21 from social sciences, and 9 from agriculture courses. Does this data suggest that the percentages on which staffing was based are not correct? State and test the relevant hypotheses using a significance level of α = 0.05.

A statistics department at a large university maintains a tutoring service for students in its introductory service courses. The service has been staffed with the expectation that 40 % of its clients would be from business statistics courses, 30 % from engineering statistics courses, 20 % from social sciences statistics courses, and 10% from agricultural statistics courses. A random sample of 120 clients revealed 52 from business, 38 from engineering, 21 from social sciences, and 9 from agriculture courses. Does this data suggest that the percentages on which staffing was based are not correct? State and test the relevant hypotheses using a significance level of α = 0.05.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 25PPS

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