(b) (C) (d) (e) (f) [u H'l'DlA-DJ Is the distribution of the sample data symmetrical or skewed? Explain your answer. [1 mark] An online shopping promoter claims that the average number of hours of online shopping for ALL Hobart households in the week before Christmas 2020 was more than three hours. Test this claim, using a signicance of a = 10%. Be careful to state your conclusion. [7 marks] What proportion of Hobart households in this sample spent more than 4 hours shopping online? [1 mark] Determine the 95% condence interval for the proportion of ALL Hobart Households which spent more than 4 hours shopping online. [3 marks] Further investigation of the sampling process revealed the households were surveyed using Facebook, and that only 16 of the 40 surveyed responded. Identify the type(s) of bias that may have occurred and explain whether the validity of our conclusions in either (c) or (e) above have been impacted. [4 marks] [Question 1 = 22 marks]