Question: To see whether there is a statistically significant difference between the age of owners of convertible and the age of owners of sedans, an advertising

To see whether there is a statistically significant difference between the age of owners of convertible and the age of owners of sedans, an advertising agency found that 15 convertible owners had an average age of 29.2 years with S=5 and 35 sedan owners had an average age of 24.8 years with S squared=8. Test at the 5% significance level

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