Chapter 14: Summary Cnapter 14 Trigonometry with Any Angie CHAPTER 14 Review Find each value rounded to four significant digits: 1. tan 143° 2. sin 209.8° 3. cos 317.4° Graph each equation for values of x between 0° and 360° in multiples of 15 4. y 6 cosx 5. y 3 sin 2x Find the period and amplitude, and graph at least two periods of each equation: 7. y 3 cos 4x 6. у3D 5 sin Зx Find the period, amplitude, and phase shift, and graph at least two periods of each equation: 8. y 4 cos (x + 60°) 9. y 6 sin (2x 180°) Solve each triangle using the labels as shown in Illustra- tion 1 (round lengths of sides to three significant digits and angles to the nearest tenth of a degree): С
Continuous Probability Distributions
Probability distributions are of two types, which are continuous probability distributions and discrete probability distributions. A continuous probability distribution contains an infinite number of values. For example, if time is infinite: you could count from 0 to a trillion seconds, billion seconds, so on indefinitely. A discrete probability distribution consists of only a countable set of possible values.
Normal Distribution
Suppose we had to design a bathroom weighing scale, how would we decide what should be the range of the weighing machine? Would we take the highest recorded human weight in history and use that as the upper limit for our weighing scale? This may not be a great idea as the sensitivity of the scale would get reduced if the range is too large. At the same time, if we keep the upper limit too low, it may not be usable for a large percentage of the population!
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