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Please help me with the steps to solve it. 1. A sample of junior high school students was asked what their favourite class was. Below

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1. A sample of junior high school students was asked what their favourite class was. Below is a table of their preferences (with some values missing) : Class Frequency Relative Frequency Geography 0.23 English Science 30 ? Band 0.12 Math 0.28 Other 0.07 How many students were surveyed? (A) 300 (B) 250 (C) 200 (D) 240 (E 350

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