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A marketing company that relies on calling mobile phones, wanted to research if age group and type of response, were independent. The company took a random sample of mobile numbers, categorised them into two different age groups, and then recorded the response as one of three options: call answered, voicemail, call unanswered. The observed frequencies are summarized in the following table. Age group $ 40 years > 40 years Unanswered 35 16 Response Voicemail 72 34 Answered 63 91 What is the total number of respondents in this survey?A researcher wants to examine the relationship between opinion of a proposed new gas mine and the political party followed. The observed frequencies are summarized in the following table. Opinion In favour Against Undecided Political party followed What is the expected frequency for respondents who follow the Liberal party and are in favour of the proposed new gas mine? Please give your answer correctly rounded to two decimal places