Mathematics, 07.07.2020 20:01, lilgunter12

The mean weight of the students in a school is 70 kilograms. A random sample of 25 students was taken and the mean weight was found to be 55 kilograms with a standard deviation of 20 kilograms. What is the test statistics? Express your answer into 2 decimal places (example: 25.00)

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The mean weight of the students in a school is 70 kilograms. A random sample of 25 students was take...