Estimating the Population Mean Using the sample information given in Exercises 20–21, give the best point estimate for the population mean ? and calculate the margin of error. 20. A random sample of n = 50 observations from a quantitative population produced x? = 56.4 and s² = 2.6. 21. A random sample of n = 75 observations from a quantitative population produced x? = 29.7 and s² = 10.8.
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We have two samples: Sample 1: n1 = 50, x̄1 = 56.4, s1 = 22.6 Sample 2: n2 = 75, x̄2 = 29.7, s2 = 10.8 Now, we need to calculate the margin of error for each sample. The margin of error is calculated using the formula: Margin of Error = z * (s / √n) where z is Show more…
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