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3. Nationally, the distribution of weapons used in robberies is as shown in the table along with the weapon used in 1652 robberies on school property.

Weapon Overall 1652 Robberies
Gun 0.42 329
Knife 0.09 122
Strong-arm 0.40 857
Other 0.09 344

Does the distribution of weapons choice in robberies in schools follow the national distribution? Use รก = 0.05 level of significance.

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