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Four random samples of 50 people each were asked to rate four different computer printers in terms of their ease of use The responses are Very easy to use Easy to use Difficult to use Very difficult

Four random samples of 50 people each were asked to rate four different computer printers in terms of their ease of use. The responses are: Very easy to use Easy to use Difficult to use Very difficult to use The responses were coded using a 4-3-2-1 system. Do these data yield enough evidence at the 5% significance level to infer that differences in ratings exist among the four printers? b. Xr19-65b The responses were recoded using a 25-22-5-2 system. Do these data yield enough evidence to infer that differences in ratings exist between the four printers? c. Why are the results of Parts (a) and (b) identical?

Jun 22 2020 View more View Less

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