Calculate the smallest sample size required to estimate the population mean under the specifications shown below. a. confidence level 95%, ? = 26, and e = 0.6 b. confidence level 90%, ? = 5.5, and e = 3 a. The sample size must be at least (Round up to the nearest whole number.) b. The sample size must be at least (Round up to the nearest whole number.)
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6, we calculate the sample size using the formula: \[ n = \left( \frac{Z \cdot \sigma}{E} \right)^2 \] where \( Z = 1.96 \) (critical value for 95% confidence level), \( \sigma = 26 \), and \( E = 0.6 \). Show more…
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