Question

Problem H: A study has been undertaken related to Highschool Students and Information Technology. A random sample of 250 students showed that 85 of them owned a laptop. (38) Refer to Problem H. Estimate the proportion of all students who own a laptop. (1) 0.034 (2) 0.5 (3) 0.34 (4) 0.85 (39) Refer to Problem H. Calculate the 95% margin of error for your estimate. (1) 0.049 (2) 0.059 (3) 0.070 (4) 0.073 (40) Refer to Problem H. Calculate a 90% confidence interval for the population proportion p of students who own a laptop. (1) 0.34 + 0.049 (2) 85 +0.0049 (3) 0.34 + 0.059 (4) 85 + 0.059

Answer 1

The solution to this problem is

Solution So 250 No. of Sample Taken =n=250 No. of Students have laptop= x=85 estimated proportion of Students have claptop = P = x= 85 = 0.34 (38) estimate of proportions of ale students who have a laptop (3) 0.34". The margin of erros at 95% conficlence -E = 1.96 The نف 1.96 B 11-6) n where 1.96 is 0.3411-0.34) the critical value at 250 0.0 5872 95%. Confidence dence 0.059 / Rounded value) (39) The margin of error is 2.) 0.059 The (I for population proportion of all students who own a laptop is 90 y. b te Ans 0.34 t 0.059 (40). (B) 0.34 $0.059