b Respondents in a survey of 1000 households were asked to indicate their

B respondents in a survey of 1000 households were

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b. Respondents in a survey of 1,000 households were asked to indicate their frequencyof domestic air travel on an interval scale. They were also classified as being in high-, medium-, or low-income groups. Does the frequency of domestic air travel differ across households of different income levels (groups)? c. In a telephone survey using a representative sample of 3,000 households, the respondents were asked to indicate their preference for fast-food restaurants using a 7-

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