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# Expected Value using Contingency Table

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A four-year university has decided to implement a new approach to teaching Statistics. Full-time and adjunct professors were surveyed to determine whether they preferred the traditional lecture approach or a computer approach to teaching Statistics. Use hypothesis testing to test the independence of opinion between the two groups.

Table
Prefer Lecture Prefer Computer No Preference
Full-time 8 13 6

1) Calculate the expected value of an adjunct professor who prefers to lecture.

A) 21.50 B) 9.83 C) 11.67 D) 7.33

2) What is the expected value of an adjunct professor who prefers computer instruction?

A) 11.67 B) 21.50 C) 9.83 D) 13.50

https://brainmass.com/statistics/contingency-table/238850

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Expected value
A four-year university has decided to implement a new approach to teaching Statistics.  Full-time and adjunct professors were surveyed to determine whether they preferred the traditional lecture approach or a computer approach to teaching Statistics.  Use hypothesis testing to test the independence of opinion ...

#### Solution Summary

Calculates expected value.

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The transportation committee for a large industrial complex wanted to study the mode of transportation used by male and female employees. The following data was obtained.

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Male 160 72.5 17.5 250
Female 160 72.5 17.5 250
Total 320 145 35 500

Using the table provided, is there a relationship between sex and mode of transportation? Formulate and test the appropriate hypothesis?

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