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The cost of a daily newspaper varies from city to city. However, the variation among prices...

The cost of a daily newspaper varies from city to city. However, the variation among prices remains steady with a standard deviation of 6¢. A study was done to test the claim that the average cost of a daily newspaper is 35¢. Eleven costs yield an average cost of 30¢ with a standard deviation of 4¢. Do the data support the claim at the 1% level?

What is the P value? It is NOT 0.0028 nor 0.0029 that's what I got but it's incorrect.
How do I go about it on a TI 84?

Math   Statistics-And-Probability   
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