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Random number generation using discrete probability distribution.
The time between arrivals of cars at the Petroco Service Station is defined by the following probability distribution:
Time between intervals(min)
Probability
1
0.15
2
0.30
3
0.40
4
1.00
Using Excel:
1. Simulate the arrival of cars at the service station for 20 arrivals and compute the average time between stations.
2. Simulate the arrival of the cars at the service station for 1 hour, using a different stream of random numbers from those used in (a) and compute the average time between arrivals.
3. Compare the results obtained in (a) and (b).
Can the company claim that they are faster than the average utility?
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Which of following statements would be right concerning a twotail test at 0.05 level of significance? We can conclude that average cottage cheese consumption in America is at least 0.705 pound more or less than 2.75 pounds per person per year.
Findout the normal model for the given proportions. The professor has every student toss a coin 50 times also calculated the proportion
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20 students in a class - if there is a 15% probability that a randomly chosen member has seen a particular movie - what is the expected number of students have seen the movie?
Using the simple test of independence (described in the lecture), decide if the events high calorie and high fiber are independent or dependent. Show your work.
Find the value of the standard normal random variable z, called z 0 such that:
Each egg was also measured for volume using a water displacement method. We wanted to know if the two methods agreed or not
How much variability will you have if you predict sales with this model?
It is believed that population standard deviation is 15 days. If test is conducted using a 0.05 level of significance, what conclusion must be reached?
Explain why random samples are preferred to nonrandom samples.
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