Using below dataset as csv file to be imported in Jupyter notebook, need python code to solve the below statistical problem:

Problem 3: Zingaro stone printing is a company that specializes in printing images or patterns on polished or unpolished stones. However, for the optimum level of printing of the image, the stone surface must have a Brinell's hardness index of at least 150. Recently, Zingaro has received a batch of polished and unpolished stones from its clients. Use the data provided to answer the following {assuming a 5% significance level); 3.1 Zingaro has reason to believe that the unpolished stones may not be suitable for printing. Do you think Zingaro is justified in thinking so? 3.2 Is the mean hardness of the polished and unpolished stones the same