The population proportion of people who are left-handed is approximately 0.10. A researcher wishes to do research on handedness (an individual's preferential use of one hand). Suppose she plans to take a random sample of 150 people and then calculate the sample proportion of people who are left-handed. What is the shape of the sampling distribution? Justify your answer, including calculating np and n ( 1 p ) . Be sure to include any necessary calculations, don't just state final answers..