To determine a target audience for a new email package, a computer company surveyed a large sample of potential customers, asking each whether he or she uses email on a regular basis. (The company considered "a regular basis" to be at least three times a week.) The customers were classified according to two variables: age ("Under 18", "18-35", "36-54", or "55+") and email use ("On a regular basis" or "Not on a regular basis").The respective observed frequencies are written in the cells of the contingency table below. In addition, three of the cells have blanks beneath the observed frequencies. Fill in these blanks with the frequencies expected if the two variables, email use and age, are independent.Round your answers to two or more decimal places.(Table illustration)| Email Use | Age (in years) | | | | | Total ||-------------------------|-----------------|-------------------|--------------------|--------------------|----------------------|--------|| | Under 18 | 18-35 | 36-54 | 55+ | Total | || On a regular basis | 131 | 122 | 45 | 94 | 392 | || | [Blank] | | | | | || Not on a regular basis | 184 | 169 | 53 | 202 | 608 | || | | | | [Blank] | | || Total | 315 | 291 | 98 | 296 | 1000 | | Please refer to the provided data for further analysis and calculation of expected frequencies in the blank cells, ensuring the assumptions of independence between age and email use.

The expected frequency can be calculated as E = (row total × column total)/Grand total

Answered: The respective observed frequencies are…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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