Section C: Advance scenarios 7. (a) Suppose, you randomly selected a customer. How likely is it that the customer will purchase: brand L brand M (b) Provide 95% interval estimates for each of the above. For each brand give a sentence answer explaining the 95% interval. 8. Provide point and 95% confidence interval estimates for the weight of each brand. Interpret your results. (i.e. give a sentence answer for the confidence intervals of each brand. 9. Suppose brand L's producer claimed that the average weight of their bags of rice is SOOgm. Test the validity of this claim at 5% level of significance. Clearly show the steps involved in hypothesis testing. 10. Suppose brand M's producer claimed that less than 20% of their bags of rice are under-filled. Test the validity of this claim at 5% level of significance. Clearly show the steps involved in hypothesis testing