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Hi There, I study research questions and hypothesis testing. I created a research question and null / alternative hypothesis, then used the ANOVA two -

Hi There,
I study research questions and hypothesis testing. I created a research question and null/alternative hypothesis, then used the ANOVA two-way test, but the professor referred to creating a proportion test to apply. I need help how to apply the proportion test in Python function for the Research Questions and Hypotheses:
GST Impact on Product Categories:
Research Question (RQ 3): How does the GST percentage vary across different product categories, and what is the potential impact on sales?
Null Hypothesis (H30): There is no significant difference of GST percentage variations across different product categories on sales in the population of interest.
Alternative Hypothesis (H3a): There is a significant difference of GST percentage variations across different product categories on sales in the population of interest.
I added the dataset tax_amount detail.
Table 1: Online Sales Data description of listings, variables name, and variables' type.
Variable Type of Variable Description
CustomerID Nominal Unique identifier for customers.
Transaction_ID Numerical (Discrete) Unique transaction identifier.
Transaction_Date Numerical (Temporal) Date of the transaction.
Product_SKU
Nominal
Unique ID for products sold.
Product_Description Nominal Description of the product.
Product_Category Nominal Categorization of products.
Quantity Numerical (Discrete) Number of items purchased in a transaction.
Avg_Price Numerical (Continuous) Average price per quantity.
Delivery_Charges Numerical (Continuous) Cost associated with delivery.
Coupon_Status Nominal Indicates if a discount coupon was applied.
Table 5: Tax Amount Data description of listings, variables name, and variables' type.
Variable Type of Variable Description
Product_Category Nominal Product category.
GST Numerical (Continuous) Percentage of Goods and Services Tax applied to each category.
My question is how to apply the proportion test to write the Python function for the above hypothesis test.

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