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Q. No 1- A Variable is normally distributed with mean 10 and standard deviation 3. By using probability: (a) Determine and interpret the quartiles of the variable. (b) Obtain and interpret the seventh decile. (c) Find the value 30% of all possible values of the variable exceed. Find the two values that divide the area under the corresponding normal curve into a middle area of 0.99 and two outside areas of 0.005. Interpret your