Sir Francis Beaufort (1774-1857), Commander in the British Royal Navy, created the Beaufort Wind Force Scale in 1805 - a simple numerical relationship to wind speed based on an observation of the effects of the wind. The heart of Beaufort's Scale was the effect of the wind on his 18th-century fighting ship in terms of the ship's characteristics under sail. The descriptions for Beaufort numbers O through 4 describe the wind in terms of the speed that it may propel the ship; those for 5 through 9 in terms of the ship's mission and sail-carrying ability; and those for 10 through 12 in terms of the ship's survival. Beaufort number WMO' description Calm 1 Light air 2 Light breeze 3 Gentle breeze 4 Moderate breeze 5 Fresh breeze 6 Strong breeze 7 Near gale 8 Gale Strong gale 10 Storm 11 Violent storm 12 Hurricane 1 World Meteorological Organization In 1946 the International Commission for Weather Telegraphy developed velocity equivalents for the Beaufort scale, transforming it from a tool of the mariner to that of the meteorologist. The equation used to convert wind speed to a Beaufort value is represented by the formula B= 2/5+8.5 – 5 where Brepresents the Beaufort number and s represents the speed of the wind in knots. A knot is a unit of speed equal to one nautical mile per hour (or approximately 1.151 miles per hour). a. Describe the transformations that convert the parent function y = /z to the Beaufort scale model. b. What is an appropriate domain and range for this function? How does that compare to the domain and range of the problem situation? 9,

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.