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15.04.2020 •
Mathematics
Who was the first person to die
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Ответ:
The probability that she lives 73 years is 0.1897
Step-by-step explanation:
Here the random variable x= 83 years where x is the average life span of a Hispanic female. the mean would be 41.5 years
We have to find the probability that Dora lives 73 years. Her present age is 53 years.
In mathematics this can be re written as P(x=73)
Variance= ∑ ( x-x`)/1= 83-41.5/1= 41.5
Standard deviation = √var= √41.5= 6.4 years
At x= 73 we have z= 73-41.5/6.4= 4.92
Using the z tables the value under the area 4.92 = 0.1897
So the Probability that she lives 73 years is 0.1897