Question: Hello Could you please help me with this exercise? 3. The following data represents the weights (in lbs) of postal packages delivered by a postal

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Could you please help me with this exercise?

Hello Could you please help me with thisHello Could you please help me with this
3. The following data represents the weights (in lbs) of postal packages delivered by a postal office during a onehour period on a certain day: 7.5, 11.1, 4.7, 6.3, 5.8, 4.2, 18.5, 10.4, 6.5, 7.6 a) What is the interquartile range? [3 marks] b) Are there any outliers in the data? Perform all necessary calculations to justify your answer. Use the method involving the interquartile range to identify the outliers. [3 marks] Solve by hand (without the use of software) and include full solutions. 4. The mean of final scores for a Statistics course is 68 % with a standard deviation of 12%. Find: a) The z score for a mark of 77%. [2 marks] b) Would a student having a score 1.9 standard deviations below the mean pass the course (Consider the passing score 50%). [2 marks] Solve by hand (without the use of software) and include full solutions

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