Calculating the mean when adding or subtracting a constant A professor gives a statistics exam. The exam has 25 possible points. The scores for the students in the first classroom are as follows: 24 25 19 15 20 19 17 25 17 Calculate the sample size, n, and the sample mean, M. n

A3cm×3cm\greend{3\,\text{cm} \times 3\,\text{cm}} 3cm×3cm start color greend, 3, space, c, m, times, 3, space, c, m, end color greend rectangle sits inside a circle with radius of 4cm\blued{4\,\text{cm}} 4cm start color blued, 4, space, c, m, end color blued . what is the area of the shaded region? round your final answer to the nearest hundredth.