(Solution) - A political scientist claims that since Confederation the number of -(2025 Original AI-Free Solution)

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A political scientist claims that since Confederation, the number of times the House of Commons sits in each session of Parliament has been increasing. The table shows, in three samples grouped by Parliament number, how many times the House of Commons has sat in each Parliament. Parliaments lasting fewer than 1.5 years were not sampled. At the 0.05 level of significance, test the claim that all three groups have the same mean number of sittings.