In a random sample of 250 people, 180 agree. Estimate the standard error. Round your answer to three decimal places. Standard error = Enter your answer; Standard error

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Question:

In a random sample of 250 people, 180 agree. Estimate the standard error. Round your answer to three decimal places. Standard error = Enter your answer; Standard error

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Answer:Standard error = 0.028 Step-by-step explanation:Standard error of the mean = √x(N-x)/N3 = 0.028 Standard error is  0.028 If you need further answer, see below α = (1-CL)/2 = 0.025 Standard normal deviate for α = Zα = 1.960 Proportion of positive results = P = x/N = 0.720 Lower bound = P - (Zα*SEM) = 0.664 Upper bound = P + (Zα*SEM) = 0.776 95% Confidence interval is 0.664 to 0.776

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