Question: If we compared two groups of 15 on a math achievement test, what would be the value of t that would have to be exceeded

  1. If we compared two groups of 15 on a math achievement test, what would be the value of t that would have to be exceeded in order for the difference to be significant (p<.05, two -tailed test )?
  2. What's wrong with the following survey question? " Should Hennepin County build a new streetcar line along Nicollet Avenue and pay for it with a casino Downtown? How would you change it?

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