The proportion of people who are left handed is 0.12 We are going to take a sample of 305 people. What is the standard deviation of the proportion of the sample who should be left handed? Answer to 3 decimal places.

To find the standard deviation of the proportion of the sample who should be left-handed, we can use the formula for the standard deviation of a sample proportion: where:- is the proportion of the population that is left-handed (0.12 in this case),- is the sample size (305 in this case).Let's plug in the values and calculate the standard deviation: First, calculate the numerator: Next, divide by the sample size: Finally, take the square root: So, the standard deviation of the proportion of the sample who should be left-handed is approximately 0.019 (rounded to three decimal places).