According to an article published in the journal Scientific Reports the mean length of growing season on Niwot Ridge, CO is 175 days with a standard deviation of 11 days. Niwot Ridge is located just below the Continental Divide near Nederland, Colorado. The study specifically looked at the growing season lengths for various coniferous forests and whether lengthening of growing season is impacting forests. They found that the growing season lengths were Normally distributed.

1. Researchers randomly selected 4 years of data. Describe the sampling distribution for the mean length of growing season for a sample of 4 years. Draw and label a Normal Model.

2. Some scientists are predicting the growing season to increase by 10 days due to climate issues. Would that change be significant? Why or why not? What percent of 4- year samples would produce a mean of 10 or more days longer than the average growing season?