Santos flipped a coin 500 times. The coin landed heads up 225 times. Find the ratio of heads to total number of coin flips. Expr
2 answers:
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Answer:
The probability of 2 or more errors is 0.018.
Step-by-step explanation:
Let <em>X</em> = number of typographical errors on a page of a certain magazine.
The expected number of errors is, <em>λ</em> = 0.2.
The random variable <em>X</em> follows a Poisson distribution with parameter <em>λ</em> = 0.2.
The probability mass function of <em>X </em>is:
Compute the probability of 2 or more errors as follows:
P (X ≥ 2) = 1 - P (X < 2)
= 1 - P (X = 0) - P (X = 1)
Thus, the probability of 2 or more errors is 0.018.
Answer:
- 1997: 66.00 billion cubic ft
- 1998: 67.19 billion cubic ft
- 2000: 69.63 billion cubic ft
- 2010: 83.23 billion cubic ft
Step-by-step explanation:
For repetitive calculations, it is convenient to let a spreadsheet or calculator do them. See attached for the table of values and the graph. The graph is that of an exponential curve. Its slope increases at an increasing rate.
