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Decreasing the sample size while holding the confidence

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Reference no: EM132404058

Question: You take a random sample (mean = x¯) from some population and form a 96% confidence interval for the population mean, m. Which value (or notation presenting the value) is guaranteed to be in the confidence interval?

 

Question: Decreasing the sample size while holding the confidence level the same will do what to the width of your confidence interval?

 

Question: A random sample of graduate students were asked, "Would you come back to school to get a second degree if you were given the opportunity?" Of the 150 people surveyed, 127 of them said that they would do so. Find a 95% confidence interval for the proportion of graduate students who would come back to school (Z_{a/2}

 

Za/2  = 1.96). Round your answer to three decimal places

Reference no: EM132404058

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