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On an average six people per hour use an electronic teller machine during the prime shopping hours in a department store. What is the probability that
(i) Exactly six people will use the machine during a randomly selected hour.(ii) Fewer than five people will use the machine during a randomly selected hour
Using the dataset, produce a graph of per capita GDP for Argentina, China, and Canada from 1965 to 1995. Is inequality between these countries increasing?
The intensity level of an earthquake is based on the Richter scale. Using logarithms, the Richter scale measures an earthquake relative to (as a ratio of) the weakest possible tremor.
To evaluate the effect of a treatment , a sample of n=9 is obtained from a population with a mean of m=40 and the treatment is administered to the individuals is found to be M-33
In the Florida lottery, six numbers from 1 to 53 must be selected. to win the jackpot, the six numbers must match the draw numbers.
Scrap rates per thousand (parts whose defects cannot be reworked) are compared for 5 randomly selected days at three plants. Does the data prove a significant difference in mean scrap rates?
Which probability distribution is suitable when sampling without replacement?
Select a US citizen and a citizen of China at random, independently of one another. Determine the probability that both have type O blood?
In a mobile phone shop on a Sunday morning, out of n = 77 customers x = 19 buy a mobile phone. What is the 95% confidence interval for the proportion of customers buying a mobile phone?
Normal distribution with mean 35 minutes and standard deviation 2 minutes. On 95% of occasions the mailing preparation takes less than _______ minutes.
A large retail corporation plans to sample sales receipts of its meat department to estimate the average size (in dollars) of a customer purchase. Previous analysis suggest that the standard deviation of the purchase amount is approximately $50.72..
Airplaneflight during the last year. If we take a random sample of 40 adults, the probability is 0.37 that the sample proportion is greater than what number.
If probability of drawing a face card is 0.625. Determine the probability of not drawing a face card.
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