Question
Uniform A study of the time spent shopping in a supermarket for a market basket of...
- Uniform
A study of the time spent shopping in a supermarket for a market basket of 20 specific items showed an approximately uniform distribution between 20 and 40 minutes.
- What is the probability that the shopping time will be between 25 and 30 minutes? (draw the graph and shade in the appropriate area!)
- What is the probability that the shopping time will be less than 35 minutes? (draw the graph and shade in the appropriate area!)
- What is the probability that the shopping time will be more than 27 minutes? (draw the graph and shade in the appropriate area!)
- What is the mean shopping time?
Homework Answers
Answer #1
a)
probability that the shopping time will be between 25 and 30 minutes=(30-25)/(40-20)=0.25
b)
probability that the shopping time will be less than 35 minutes=P(X<35)=(35-20)/20 =0.75
c)
probability that the shopping time will be more than 27 minutes =P(X>27)=(40-27)/20 =0.65
d)
mean =(20+40)/2 =30 minutes
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