Hypothesis Testing
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As a part of a survey on the use of Office Suites Software, the company doing the polling wanted to know whether its population was uniformly distributed over the following age distribution... Based on the data, do you think that the respondents are uniformly distributed over the age categories?
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Solution Summary
As a part of a survey on the use of Office Suites Software, the company doing the polling wanted to know whether its population was uniformly distributed over the following age distribution: 25,25 to 44, 45 and up. The company looked at the data it had collected so far and found the following distribution:
Age Group Number of Respondents
Under 25 73
25 to 44 61
45 and up 66
Total 200
Based on the data, do you think that the respondents are uniformly distributed over the age categories?
Set up the hypotheses to test whether the data are uniformly distributed over the age categories.
Find the expected frequency distributed and perform the chi-square goodness of fit test.
At the 0.05 level of significance, would you say that the respondents were uniformly distributed over the age groups?
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