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The question is attached in the photo below. All 4 parts are important. Thank you. Suppose that you have a sample of 10 students in

The question is attached in the photo below. All 4 parts are important. Thank you.
Suppose that you have a sample of 10 students in the table below . You know the mark in a course for each student. Student Mark 50 88 87 78 76 72 90 65 86 10 68 Table A3-1 Please answer the following questions: 1. Calculate the mean mark. Please show the procedures of your calculation. 2. Calculate the variance, standard deviation, and standard error. Please show the procedures of your calculation. Please round the results to integers. 3. Explain each statistic in Step 2 based on the study 4. Construct and interpret the 99% confidence interval for the mean mark of the population. Please round your answers to integers

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