Question

Susan Jackson is a long jumper with the Universitys athletics team. She is currently in training for the next summer Olympic games A sample of 51 long jumps have been recorded Long jump marks (m) 7.4 6.89 7.396.77 8.13 6.43 6.92 6.617.437.25 7.58 7.54 7.49 7.91 7.38 7.08 6.157.11 6.926.73 6.74 6.83 7.22 7.51 7.02 7.08 7.14 7.18 7.256.68 6.95 6.83 6.96 6.6 7.38 6.477 6.51 6.447.91 6.72 7.797.63 6.88 6.47 7.68 7.317.22 7.387.62 6.31 40 40 40 30 30 30 20 20 20 10 10 10 0 10 20 30 40 50 60 70 80 90 0 10 20 30 40 50 60 70 80 90 0 10 20 30 40 50 60 70 80 90 a) It would be appropriate to use the t procedure for this data when the histogram for the data most closely resembles graph b) Calculate the 95% confidence interval for the mean jump length. Give your answers to 2 decimal places

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