The amount spent by a country's companies on digital marketing, in billions of dollars, x years after 1995 can be estimated by f(x)=1.36(1.51)^(x−1995). Evaluate f(1997) and interpret the result. Select the choice below that best interprets f(1997) and, if necessary, fill in any answer box that completes the choice (round to 1 decimal place as needed). a. The amount of money spent in the year 1997 on digital marketing was approximately ______ billion dollars. b. For the next 2 years, the companies spent approximately ____ billion dollars each year on digital marketing. c. In 1997, a country's companies spent approximately ____ billion dollars more than in the year 1995. #2. Also, Determine the year in which companies first spent $20 billion on digital marketing. Companies first spent $20 billion on digital marketing in _______.
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!
The amount spent by a country's companies on digital marketing, in billions of dollars, x years after 1995 can be estimated by
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