Final answer:
The sample proportion is calculated using the formula p' = x/n. In this case, the sample proportion is 0.09 (or 9%).
Step-by-step explanation:
To calculate the sample proportion, we use the formula p' = x/n, where x represents the number of successes and n represents the sample size.
In this case, x = 27 and n = 300. Plugging in these values, we get p' = 27/300 = 0.09.
Therefore, the sample proportion is 0.09 (or 9%).