Question

Calculate 2(Chi-square) with the help of the

following data :

Size of Villages in Villages in Total

Villages Plain Region Hill Region

Large 30 10 40

Small 20 10 30

Total 50 20 70​

Answer 1

Step-by-step explanation:

Six salivary glands, located around the oral cavity, secrete saliva. This substance moves out of the glands into the oral cavity through ducts. Saliva is 99% water, but also contains enzymes and proteins that lubricate the oral cavity and begin chemical digestion of food.

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