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A student population consists of 55% females and 45% males. A researcher recorded the gender of each student emerging from a theater and found a total of 385 females and 215 males. Is the gender distribution for theater goers significantly different from the distribution for the general college. Test at .05 leve of significance.
How many departments would they need to survey to achieve this level of accuracy with 95% confidence?
The area of study is Sampling Methods and the Central Limit Theorem. Consider the digits in the phone numbers on a randomly selected page of your local phone book a population.
Consider a liter of 5 puppies (3 brown/2 black). Draw a probability tree indicating the probabilities for selecting 3 puppies without replacement? What is the probability that I will select 3 brown puppies? 1 brown and 2 black puppies? At least 1 ..
Is there a significant difference in sales dollars of hats between the west side and east side stores at the 5 percent level of significance? (a) State the hypotheses. (b) State the decision rule and sketch it. (c) Find the test statistic and stat..
The ________ is the probability of observing a sample value as extreme as, or more extreme than the value observed, given that the null hypothesis is true.
Perform a study to compare the characteristics of patients discharged against medical advice from the institution
Estimate the area under the Normal Distribution from the mean to a z-score of -2.07. Estimate the z-score that corresponds to an area of 0.5557 under the Normal Distribution.
Suppose U is a Unit (25, 50) random variable.Find the CDF of U and sketch a graph.
The sample mean of the sampling distribution of a statistic is 6 and the standard error of the statistic is 1.03. What is the probability that xbar > 7.52?
Sampling variability refers to the idea that different samples will include different individuals
Computing the mean value for the given data - What is the new mean for the class and frequency distribution graph, what type of graph should be used
If you draw one ball from the urn what is the probability that it is blue or white?
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