In the 1980's it was generally believed that congenital abnormalities affected about 5% of the nation's children. Some people be
lieve that the increase in the number of chemicals in the environment has led to an increase in the incidence of abnormalities. A recent study examined 384 children and found that 46 of them showed signs of an abnormality. Is this strong evidence that the risk has increased?
It is a strong evidence that the risk has increased
Explanation:
From the result of the recent study, the risk of congenital abnormalities has increased. In 1980, about only 5% of national children were believed to be affected. However, results from the recent study showed an increase to about 12%
i.e. (46/384) x 100 = 11.97%.
Additionally, assuming the sampling was random, According to the summary statistics attached, the p- value is smaller than the significance level, thus you can concluded that there is significant increase in risk
Antenna swapping of the rover unit is used to enhance the accuracy of GPS position measurements. GPS was initially developed for military use and was adapted for determining the position of several points and the distances between them (surveying). This can give a position with Latitude, Longitude, and Height without measuring angles and distances between intermediate points.