8.75 Find the power
Refer to the previous exercise. Consider performing a significance test to compare the population proportions for the two studies. Use and a two-sided alternative.
8.75
(a) (i) 0.99. (ii) 0.82. (iii) 0.31. (iv) 0.03. (v) 0.34. (vi) 0.89. (vii) 1. (c) As the difference between the two proportions gets smaller, the power decreases; if the two proportions are quite different, then the power is quite large.