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A study on crime indicated that 3.1 car thefts occur each minute in the USA. Assume that the distribution of thefts per minute can be approximated by the Poisson probability distribution.
a) Calculate the probability that exactly 4 thefts occur in a minute
b) What is the probability there are no thefts in a minute?
c) What is the probability there is at least 1 theft in a minute?
Assume that we randomly select 15 teachers who have recently left their profession. Find the probability that at least 6 of them were laid off.
What is the 95% confidence interval for the true mean length of the bolt?
A box contains 5 red marbles and 10 blue marbles. You can take 3 marbles at random, without replacement. What is the probability of winning this game?
What effect has the transformation had on the lowest exam mark and what effect has the transformation had on the highest exam mark - STATS 201/8 Data Analysis
question two types of vehicle use the university central bus station uni-link buses and national express coaches.a on
Find the marginal probabilities, are Disney and Amazon stock returns independent and what is the mean and variance of the stocks D and A?
the population of completion times is 10.4 minutes, what is the minimum sample size needed for the managers to be 95% confident that their estimate is within 2.2 minutes of u?
A sociologist wants to determine if the life expectancy of people in Africa is less than the life expectancy of people in Asia.
Bowling balls the sample standard deviation was found to be 0.52 pounds. Construct a 95% confidence interval for the variance of the bowling ball weight.
Several samples of size 56 are randomly selected and means computed. What value would you expect to determine for standard deviation of all these sample means?
We have a deck of 52 playing cards. What is the probability of drawing?
a marketing research firm is interested in determining whether there is difference between households in chicago and
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