SOLUTION: At a traffic signal there are 3 cars arriving in a minute. A random sample of 1500 minutes is taken and 7,500 cars were observed arriving at the signal. Are the number of cars arri
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-> SOLUTION: At a traffic signal there are 3 cars arriving in a minute. A random sample of 1500 minutes is taken and 7,500 cars were observed arriving at the signal. Are the number of cars arri
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Question 1116241: At a traffic signal there are 3 cars arriving in a minute. A random sample of 1500 minutes is taken and 7,500 cars were observed arriving at the signal. Are the number of cars arriving at the signal going up? Test at a 5% level of significance? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! This is the same as 5 cars a minute
for 5, given parameter 3, p(5)=e^(-3)*3^3^5/5!
This can be solved for all relevant values
Use the table:
cumulative probability up to 5 is 0.9161.
This is not significantly larger at the 0.05 level.
