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"The Poisson distribution can be a reasonable approximation of the binomial distribution." Explain why this may/may not be true.
The principal randomly selected six students to take an aptitude test. Their scores were: 76.5 85.2 77.9 83.6 71.9 88.6. Determine a 90% confidence interval for the mean score for all students.
Find out whether or not right-hemisphere damage results in significantly reduced performance on spatial skills task. Test with alpha set at .05 with one tail.
A random sample of 400 observations produced a sample proportion of 0.32. What is the standard error to construct a 99.5% confidence interval.
What is the probability that the mean weight for a sample of 40 trout exceeds 405.5 grams?
A survey of autos parked in student and staff lots at a large university classified the brands by country of origin, as seen in the table: Given that the car is Europena, what proportion of the drivers are staff?
q1. determine the appropriate approach to conduct a hypothesis test for this claim fewer than 5 of patients experience
Assuming that Mendel's proportion of 3/4 is correct, find the probability of getting 787 or fewer plants with long stems among 1064 offspring plants. compare answers with binomial and normal approximation.
Cletus Inc. plans to overhaul the cafeteria menu and has formed a four person team to evaluate alternatives. Calculate the importance score sum for option A?
A random sample of 85 group leaders and supervisors revealed that they worked an average of 6.5 years before being promoted. The population standard deviation was 1.7 years. Using the 0.95 degree of confidence, what is the confidence interval for ..
What is the probability that the sample proportion p of an SRS of size n = 1000 Who say their health is excellent lies between 26% and 32%?
What is the probability that the sample proportion is less than 0.5? What is the upper limit of the sample proportion such that only 3%of the time the sample proportion would exceed this value
a lock on a bank vault consists of three dials each with 30 positions. in order for the vault to open each of the three
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