Final answer:
To find the values of t that bound the middle 0.98 of the distribution for df = 24, you need to use the t-distribution table or a calculator. For a two-sided confidence interval, use the formula t_a = invT(1 - (1 - C)/2, df), where C is the confidence level. For a two-sided 95% confidence interval, substituting C = 0.95 and df = 24 into the formula gives t_a = 2.093.
Step-by-step explanation:
To find the values of t that bound the middle 0.98 of the distribution for df = 24, we need to use the t-distribution table or a calculator. For a two-sided confidence interval, we can find the appropriate t value using the formula: ta = invT(1 - (1 - C)/2, df), where C is the confidence level.
For this case, the middle 0.98 corresponds to a two-sided 95% confidence interval. So, we substitute C = 0.95 and df = 24 into the formula to find ta = invT(1 - (1 - 0.95)/2, 24). Evaluating this expression using the given calculator function, we find ta = 2.093.