a) In order to estimate the population mean, μ, to within 3 at95% confidence, what is the minimum sample size required?(Assumeσ=6.7).
b) If just the population standard deviation were to increase,then the minimum sample size required would:
decrease /increase  Â
c)Â Â If just the confidence level were to decrease(i.e. go from 95% to 90% confidence), then the minimum sample sizerequired would:
decrease/increase  Â
d) If just the bound within which μ was to be estimated were toincrease, then the minimum sample size requiredwould: Â
decrease/increase
