Suppose that in an election voter preference is sharply divided along gender lines. 40% of women will vote for candidate a, the rest will vote for candidate b; 70% of men will vote for candidate a, the rest for candidate b. which of the following represents the lowest percentage of voters that must be women on election day, in order that candidate b wins the election?

A. find the power of the test, when the null hypothesis assumes a population mean of mu = 450, with a population standard deviation of 156, the sample size is 5 and the true mean is 638.47 with confidence intervals of 95 b. find the power of the test, when the null hypothesis assumes a population mean of mu = 644, with a population standard deviation of 174, the sample size is 3 and the true mean is 744.04 with confidence intervals of 95% c. find the power of the test, when the null hypothesis assumes a population mean of mu = 510, with a population standard deviation of 126, the sample size is 10 and the true mean is 529.44 with confidence intervals of 95