A meteorologist in denver recorded y = the number of days of rain during a 30-day period. does y have a binomial distribution? i
1 answer:
Solution: Yes, the random variable y will have a binomial distribution. Because there are two possible outcomes 1. number of days of rain and 2. number of days of no rain.
The parameters of binomial distribution are and
The parameter n is given as the number of day's under consideration.
The parameter p is not given, but it can be estimated by number of days it rained divided by the total number of days under consideration.
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Firstly, factor out 3x on the right side of the equation:
Next, use the zero product property to solve y = 0:
So we know that the zeros of this equation are (4,0) and (0,0). Looking at the four graphs, the only graph that has a line crossing those 2 points is the first graph. Therefore, the graph of this equation is the first graph.