7. A parent believes the average height for 14 year old girls differs from that of 14 year old boys. Estimate the difference in the height between girls and boys using a 95% confidence interval. The summary data are listed below where height is in feet. Sample size Sample mean Standard deviation Boys 40 5.1 0.2 Girls 40 4.8 0.3 Based on your interval, do you think there is a significant difference between the true mean height of 14 year old girls and boys? Explain