To calculate the sample mean and sample standard deviation, let's follow the steps systematically.

Given Data:

The state test scores for 1212 randomly selected high school seniors are provided. However, the numbers are unclear or missing. From the provided scores:

• 1422, 1422, 1225, 1225, 983, 983, 692, 692, 724, 724, 834, 834, 725, 725, 750, 750, 548, 548, 620, 620, 1441, 1441, 945, 945.

Part 1: Sample Mean ($\bar{x}$)

The formula for the sample mean is:

$\bar{x} = \frac{\sum x_i}{n}$

Where:

• $x_i$ is each individual score,
• $n$ is the total number of scores (1212).

Step 1: Sum the scores.

Let's calculate the total sum of these scores:

$1422 + 1422 + 1225 + 1225 + 983 + 983 + 692 + 692 + 724 + 724 + 834 + 834 + 725 + 725 + 750 + 750 + 548 + 548 + 620 + 620 + 1441 + 1441 + 945 + 945$

Step 2: Find the sample mean.

Part 2: Sample Standard Deviation ($s$)

The formula for the sample standard deviation is:

$s = \sqrt{\frac{\sum (x_i - \bar{x})^2}{n - 1}}$

Where:

• ( \sum (x_i -