Problem 1 Left-handed people are rare. Suppose a researcher conducts a survey of 30 people and finds that 4 of them are left handed. (a) Construct a 95% confidence interval to estimate the true...

Extracted text: Problem 1 Left-handed people are rare. Suppose a researcher conducts a survey of 30 people and finds that 4 of them are left handed. (a) Construct a 95% confidence interval to estimate the true proportion of left-handed people in the population. Also, interpret the interval. (b) Research suggests that 11% of the population are left-handed. Assess this claim using your answer from (a). (c) Suppose another researcher conducts a similar sur vey of 61 people and finds that 10 of them are left handed. Use a 95% confidence interval compare the results of the two Tsurveys. What difference is there (if any)?