Question 1 [5 points} TovMart is one of Australia's leading toy stores that originates from a familv-based chain of general stores. TovMart has stores all over Australia, with the first one being established 20 vears ago. Each vear TovMart conducts a store review survey of a random sample of its stores. The table below lists some variable descriptors of data obtained from its most recent store review survev. Variable Name Variable Description Customers rate their shopping experience between one and five StoreRatmg stars, one representing the lowest and five as the highest. StoreAge: Age of the store. StaffTraining: Number of training courses taken while emploved at TovMart. 1. Credit card 2. Debit card 3. Cash 4. Gift card 5. Checks 6. PayOptrons: Mobile payment Sales: Total Sales revenue for the financial year {$}. StoreAccess: Store has access for people with disability: ves. no. For each of the variable tvpes below, identifv and write one matching variable name from the table above. If there are no matching variable names, then write \"None". Nominal variable: Ordinal variable: Discrete variable: Continuous variable: Dummv variable: Question 2 [6 points) The University academic progress team suspects that the average number of units failed per trimester by students is rising. They wish to estimate the number of units failed by students during the first trimester. To do so. they randomly select 100 student academic transcripts and records the number of units each student failed in the first trimester. i. Identify the population of interest. ii. Identify the variableIs] of interest. iii. Provide a parameter of interest in this study. Explain your reasoning. Question 3 [3 points) A study aims to estimate the proportion of Australian residents who are willing to spend more tax dollars on solar-powered streetlights. What sampling technique would most likely be used to collect the data for this study? Explain your reasoning. Question 4 {3 points) A local council is interested in studying the incomes of residents in a particular area. The population standard deviation is known to be $1,000. What sample size would the local council require to estimate the average income to within i $100 with a 99% confidence? You must show your workings. n___.n_.c1