You collect data on coronavirus cases from a random sample of cities of similar sizes in cold climates and in warm climates and make the following table: (This data can be copied into Excel.) You use this data to answer the research question: is the population average number of coronavirus cases different in warm cities and cold cities?

Q: Help on #4 please.

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A: Given: For Longboard n1=30, X¯1=12.40 S1=5.4431 For Shortboard n2=30, X¯2=10.03 S2=4.9514