Paper , Order, or Assignment Requirements

Section C: Advance scenarios (30 marks)
7. Suppose, you randomly selected a customer. How likely is it that the customer will purchase
i. brand A
ii. brand B
Provide 95% interval estimates for each of the above. Show the confidence intervals graphically and interpret your results. (7 marks)

8. Provide point and 95% confidence interval estimates for the weight of tuna cans, show it graphically and interpret your results. (7 marks)
ANSWER:

9. Suppose brand A�s producer claimed that the average weight of their products is 100gm. Test validity of this claim at 5% level of significance. Clearly show steps involved in hypothesis testing. ( 8 marks)
HO: �= 100
HA: � ? 100
? IS KNOWN
T=
�–�
S?N

10) Suppose brand B�s producer claimed that less than 20% of their cans are under-filled. Test validity of this claim at 5% level of significance. Clearly show steps involved in hypothesis testing. (8 marks)