The mean IG for whole population in any age goup is assume to be 100. Assume IQ scores of 72 12th graders in columbus are estimated and sample mean is found to be 103.4 and sample standard deviation is 20.2. Do scores provide evidence that mean IQ of the population is not 100? i) Express null Hypothesis and alternative Hypothesis. ii) Write standard score for data. iii) determine P-Value for the significance test. iv) summarize conclusion in context of the problem.