Question

Determine the sample size needed to reject Ho if the ratio is 3 times the hypothesized value of 2 variances, alpha = 0.05, beta = 0.1, R = 3

Answer 1

The sample size

$$\mathbf{SS} = \frac{Z^2 * (p) * (1 - p)}{C^2}$$

where:

- $\mathbf{Z} = 3$

- $\mathbf{p} = 0.05$

- $\mathbf{c} = 0.1$

$$SS = 9 \times (0.05) \times (1 - 0.05) / 0.1 = 4.275$$