ccording to previous studies 16 of the U S population is left handed Not knowing this a high school student claims that the percentage of left handed eople in the U S is 17 The student is going to take a random sample of 2100 people in the U S to try to gather evidence to support the claim Let p be the proportion of left handed people in the sample Answer the following If necessary consult a list of formulas a Find the mean of p b Find the standard deviation of p c Compute an approximation for P 0 17 which is the probability that there will be 17 or fewer left handed people in the sample Round your answer to four decimal places