step in the experimental design process is to create a sales outcome power analysis curve. For an effect size of $0.008, pooled standard error of $1.57, significance level of 0.10., two-sided alternative hypothesis, and equally sized control and test groups, use the pwr.t.test function of the pwr package to determine the group sample sizes for power from 0.5 to 0.95 in increments of 0.05.7 Via a graph, illustrate the power curve. Ensure the graph has an appropriate title and labeled axes. What is each group's sample size to obtain a desired power of 0.8?8