Question: 4. a) i) Define Confidence Interval? (2 Marks)ii) Name two factors that determine the width of a confidenceinterval? (2 Marks)iii) Write the confidence interval formula

4. a) i) Define Confidence Interval? (2 Marks)ii) Name two factors that determine the width of a confidenceinterval? (2 Marks)iii) Write the confidence interval formula (2 Marks)b) A PHD student i 2 answers

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