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Three distributions each of 100 members and standard deviation 4.5 units are located with means at 12.1, 17.1, 22.1 units respectively. Showing details in the working, determine the standard deviation of the distribution obtained by combining the three.
What is the probability that a woman has a ferritin value of 100 or less?
Explain the differences between qualitative and judgmental statistical time-series, and explanatory/causal forecasting models.
how is the shape of the binomial distribution changed for a given sample size n as p is increased? hint let n25 and use
In Exercise, you gave a 95% confidence interval based on a random sample of n = 1012 adults. How large a sample would be needed to get a margin of error.
1.suppose x is a continuous random variable taking values between 0 and 1 and having a probability distribution
Find the probability that the sample contains 2 defective items. What assumptions are you making?
Manufacturing and Product Development Composite decks are made of recycled wood and plastic, are low-maintenance and sturdy, and are designed
Otherwise, the experiment is called a failure. The outcome space is O = {success, failure}. Let event A = {success}. Which value has P(A)?
What best describes what the? stem-and-leaf plot tells you about the? data?
If an advertising campaign has an average frequency of 6.6 to an audience of 11,000,000 persons, what is the number of total audience impressions?
Construct a 90% confidence interval to estimate the difference of (average number of gallons sold on weekdays - average number of gallons sold on weekends). Assume the population standard deviations are the same for both weekdays and weekends.
It is believed that students who begin studying for final exams a week before the test score differently than students who wait until the night before. Suppose you want to test specifically that students who study earlier have an average score tha..
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