Which of the following is(are) TRUE about the confidence interval on one population mean? I. A 90% confidence level will give a NARROWER interval than that of a 95% confidence level, holding other factors constant. II. A sample of 100 units will give a NARROWER interval than with a sample of 150 units, holding other factors constant. Choices: I only, II only, Both I and II, Neither I nor II

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A: n = 377 p = 42/377 =0.1114