3. To investigate if autism is marked by different brain growth patterns in early life, studies have tried to link brain size in toddlers to autism. Suppose the whole-brain volume in non-autistic toddlers is known to be 1200 milliliters, on average. One study based on a sample size of 25 autistic toddlers had a sample mean volume of 1280 ml with a standard deviation of 230 ml. a. Calculate a 95% condence interval for the whole-brain volume of autistic toddlers. Given: tgf=24 = 2.064 b. Do the results from this study suggest that autistic toddlers have a different mean whole- brain volume as non-autistic toddlers? Explain your answer. c. If the data from this study had the same descriptive statistics but was from a sample of size 40 instead of 25 , would the 95% condence have been wider or narrower