A random sample of n=16 scores is obtained from a population with a mean of µ= 80 and a treatment is administered to the sample. After treatment, the sample

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To find the mean of the sample after treatment, we need to know the sample scores. The treatment may have had an impact on the scores, so the mean of the sample might have changed.

If you have the individual scores after treatment, you can calculate the mean simply by summing up all the scores and dividing it by the number of scores (n).

To calculate the mean, follow these steps:

1. Add up all the scores after treatment.
2. Divide the sum by the number of scores (n).

For example, let's say the sample scores after treatment are:
85, 78, 83, 90, 87, 82, 75, 88, 85, 84, 86, 89, 79, 81, 80, 83

Step 1: Add up all the scores:
85 + 78 + 83 + 90 + 87 + 82 + 75 + 88 + 85 + 84 + 86 + 89 + 79 + 81 + 80 + 83 = 1346

Step 2: Divide the sum by the number of scores (16 in this case):
1346 / 16 = 84.125

Therefore, the mean of the sample after treatment is approximately 84.125.

Note: Calculating the mean for a sample tells us the average value of the scores after treatment. It can help us understand the overall impact of the treatment on the sample.