Question1 A lecturer in Banking kept accurate statistics regarding the attendance of students during his classes....

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Question1 A lecturer in "Banking" kept accurate statistics regarding the attendance of students during his classes. For the 30 classes held during the semester, the percentage of student attendance is presented in the table: 62 59 67 69 68 57 51 54 60 55 70 43 62 63 45 58 73 75 45 53 53 59 73 53 61 65 79 43 76 54 1. Construct a tree diagram 2. Estimate class attendance by calculating the following sample characteristics: a) Arithmetic mean; b) Fashion; c) Median. 3. Group the data from the table and present their frequency distribution in tabular and graphical form. 4. Plot the relative, cumulative frequency distribution of the data. 5. Using ungrouped data, determine the variance of attendance by computing the scores: a) Mean absolute/linear/deviation; b) Dispersion; (c) Standard deviation. 6. Construct a confidence interval for the mean attendance at a confidence probability of 0.95. 7. To test the hypothesis that the population average value of student attendance is not less than 60%, at a set significance level of 0.05. Question1 A lecturer in "Banking" kept accurate statistics regarding the attendance of students during his classes. For the 30 classes held during the semester, the percentage of student attendance is presented in the table: 62 59 67 69 68 57 51 54 60 55 70 43 62 63 45 58 73 75 45 53 53 59 73 53 61 65 79 43 76 54 1. Construct a tree diagram 2. Estimate class attendance by calculating the following sample characteristics: a) Arithmetic mean; b) Fashion; c) Median. 3. Group the data from the table and present their frequency distribution in tabular and graphical form. 4. Plot the relative, cumulative frequency distribution of the data. 5. Using ungrouped data, determine the variance of attendance by computing the scores: a) Mean absolute/linear/deviation; b) Dispersion; (c) Standard deviation. 6. Construct a confidence interval for the mean attendance at a confidence probability of 0.95. 7. To test the hypothesis that the population average value of student attendance is not less than 60%, at a set significance level of 0.05.