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Question: Japan's birthrate is believed to be 1.57 per woman. Assume that the population standard deviation is 0.4. If a random sample of 200 women is selected, what is the probability that the sample mean will fall between 1.52 and 1.62?
Interpret the first quarterly index. In other words, what is the value of the series in the first quarter as compared to the average?
If an employee is selected for promotion, find the probability that the employee will be under 25 or a female. Express your answer as a fraction in lowest terms.
What proportion of the students had scores between 30 and 40?- What is the probability that a randomly selected student would score between 30 and 40?
A recent survey conducted by Towers Perrin and published in the Financial Times showed that among 460 organizations in 13 European countries, 93% have bonus.
You should use the hypergeometric distribution because you are sampling a small population without replacement.you are sampling a large population without replacement. You are sampling a small population with replacement.
rob and steve are having an archery contest the goal is to shoot an arrow closest to the center of a target the bulls
In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.
The number of text messages that Debbie's son Jeff sends and receives a month follows the normal distribution with a mean of 4,580 (I am not making this up!) and a standard deviation of 550. What is the probability that next month he will send and..
Compute an exponential smoothing forecast with a =.20, an adjusted exponential smoothing forecast with a = .20 and B =.20 and a linear forecast. Compare the three forecast, using MAD and average error (E) and indicate which seem to be most accurat..
Heights and weights were recorded in meters and kilograms, respectively. What would be the value of the correlation if the measurements had instead been made in inches and pounds?
Suppose that we collect data on "hours of sleep last night" from 64 students who are present at an 11:00 A.M. statistics class.- Calculate the confidence interval.
suppose that 30 of a group of people have hazel eyes. assume that passengers boarding the plane form a randomly chosen
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