Mathematics, 22.04.2020 03:45 gokusupersaiyan12345
You need to compute the a 90% confidence interval for the population mean. How large a sample should you draw to ensure that the sample mean does not deviate from the population mean by more than 1.5? (Use 9.2 as an estimate of the population standard deviation from prior studies.)
Answers: 2
![n=[\frac{z_{\alpha/2}\times \sigma}{MOE}]^{2}](/tpl/images/0617/4866/6225f.png)
![=[\frac{1.645\times 9.2}{1.5}]^{2}\\=101.795\\\approx102](/tpl/images/0617/4866/eee01.png)
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