Mathematics, 24.06.2020 17:01 tashakelly42
Data from 14 cities were combined for aâ 20-year period, and the total 280 âcity-years included a total of 119 homicides. After finding the mean number of homicides perâ city-year, find the probability that a randomly selectedâ city-year has the following numbers ofâ homicides, then compare the actual results to those expected by using the Poissonâ probabilities:
a. A. P(0)=
b. B. P(1)=
c. C. P(2)=
d. D. P(3)=
e. E. P(4)=
The actual results consisted of 182 city-years with 0 homicides; 79 city-years with one homicide; 17 city-years with two homicides; 2 city-years with three homicides; 0 city-years with four homicides. Compare the actual results to those expected by using the Poisson probabilities. Does the Poisson distribution serve as a good tool for predicting the actual results?
1. Yes, the results from the Poisson distribution probabilities closely match the actual results.
2. No, the results from the Poisson distribution probabilities do not match the actual results.
Answers: 1
Mathematics, 21.06.2019 16:20, PONBallfordM89
Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?
Answers: 1
Mathematics, 21.06.2019 20:00, suselygonza
Compare the following pair of numbers a and b in three ways. a. find the ratio of a to b. b. find the ratio of b to a. c. complete the sentence: a is percent of b. a=120 and b=340 a. the ratio of a to b is . b. the ratio of b to a is . c. a is nothing percent of b.
Answers: 1
Data from 14 cities were combined for aâ 20-year period, and the total 280 âcity-years included a to...
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