Experts agree that early diagnosis of autism spectrum disorders (ASD) is important so children get the support they need to develop, progress, and thrive. The National Center for Biotechnology Information conducted a study in which the ages at diagnosis for a random sample of 421 children with ASD were recorded. The average age was 38.2 months with a standard deviation of 8.7 months. Estimate the mean age at diagnosis for children with ASD with 96% confidence.

The inside wheels of a car traveling on a circular path are rotating half as fast as the outside wheels. the front two wheels are six feet apart. what is the number of feet in the path traced by the inside front wheel in one trip around the circle? express your answer in the form "k \pi", where k is an integer.

What is the average rate of change for this function for the interval from x=2 to x=4 ?

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)