Question

1. - 1.25 points StatsByL01 15.2A.004. My Notes Ask Your Teacher A student conducts a simple random sample of students from her high school and finds that 22 out of 110 students in her sample regularly walk to school. Give a point estimate for the proportion of all Students at her high school who regularly walk to school Submit Answer 2. -/1.25 points UHStat4 10.E.044. My Notes Ask Your Teacher For each combination of sample size and sample proportion, find the approximate margin of error for the 95% confidence level (Round the answers to three decimal places.) (a) 300, -0.51. (b) = 500,D 0.51 (C) = 500,D 0.40 (d) 500, P-0.90. () - 1100,D 0.40. You may need to use the appropriate table in the Appendix of Tables to answer this question

Answer 1

solution: - Il point of estimate = 2200 - 0. 27 0.2 12 Margin of error = hala VPLIP) on ca) n= 3000; p = 0.5) ME : 1.9 0.51 0.49 3000 = 0.018) 0.018 (b) n = 500; P = 0.5) ME = 196 x 0.51X0.49 = 0.049 500 (c) m = 500; p = 0.40 ME = 1.96x J 0.40x0.60 500 = 10.0438 500 (d) n = 500 ; p=o.go ME=1960.90x0.40 - 0.026 ) (C) ME = 1.00 0.4 x 0.6 [0.029 1100