4) John wants to see if a coin is unbiased or biased towards coming down heads. He tosses the coin 8 times and counts the number of heads, x, obtained in 8 tosses. (a) Describe the test statistic ('I mark) (h) Write down a suitable null hypothesis (1 mark) (c) Write down a suitable alternative hypothesis (1 mark) (d) Use the table below to calculate Laspeyres price index for the year 2019 . (3 marks) (e) Use the table below to calculate Paasche price index for the year 2019. (3 marks) (f) Suggest why there is a difference in values between Laspeyres price index and Paasche price index. (1 mark) 2018 base year iphones Android phones Total 10 marks