On the average, 1.8 customers per minute arrive at any one of the checkout counters of a grocery store. What type of probability distribution can be used to find out the probability that there will be no customer arriving at a checkout counter?
举一反三
- A binomial distribution for which the number of trials n is large can well be approximated by a Poisson distribution when the probability of success, p, is:
- In a continuous probability distribution, the random variable: A: is limited to certain values. B: may be any value within a certain range. C: may have a probability greater than 1.00. D: is discrete.
- Most supermarkets have installed the automatic checkout lanes for customers,
- Which of the following statements is not a property of the normal probability distribution?
- After preparing the probability distribution of cost outcome for a project, the estimate, with a 15% probability of being exceeded, is approximately one standard deviation （）. A: below the mean B: above the median C: above the mean D: above the median