To determine a target audience for a new email package, a computer company surveyed a large random sample of potential customers, asking each whether he/she uses email on a regular basis. (The company...

To determine a target audience for a new email package, a computer company surveyed a large random sample of potential customers, asking each whether he/she uses email on a regular basis. (The company considered "a regular basis" to be at least three times a week.) The data, as summarized in the contingency table below, were classified according to two variables: theage of the respondent ("under 18", "18-35", "36-54", "55+") andregularity of email use ("on a regular basis" or "not on a regular basis").

Each cell of the table contains three numbers: the first number is the observed cell frequency (fO); the second number is the expected cell frequency (fE) under the assumption that there is no dependence between age and regularity of email use and the third number is the following value.

Extracted text: (Vo JE) Fill in the missing values in the contingency table. Round your expected frequencies to two or more decimal places, and round your values to three fE or more decimal places. Send data to Excel Age (in years) Under 18 18-35 36-54 55+ Total 126 114 47 113 On a regular 122.40 120.00 400 basis 0.576 0.408 Regularity of email use 171 192 50 187 Not on a regular 183.60 180.00 600 basis 0.384 0.272 Total 297 306 97 300 1000