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A survey of 100 students at new england college showed the following:7 take english,history and language, 17 take english and history,15 take english and language,18 take history and language,48 take english, 49 take history, 38 take language.draw a venn diagram and answer the questions: how many students
a) take history but neither of the other two?
b) take english and history but not language?
c) take none of the three?
d) take exactly two of the three?
e) do not take a language?
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 ..
a simple random sample of size n is drawn from a population that is normally distributed. the sample mean x is found to
Consider this joint probability distribution P: Determine whether P constitutes a Bayesian network with the DAG X -> Y -> Z:
A simple random sample is found to be (0.7, 2.1). Can we conclude that 90% of households have between 0.7 and 2.1 children? Justify your answer.
The population mean and population standard deviation of the chest circumferences are 39.85 and 2.07, respectively. Identify the normal curve that should be used for the chest circumferences.
a population variance 34a. what is the standard deviation ?b. what if n 14 what would be the standard deviation of the
Since we cannot contact the real estate agents to follow up on these errors, for the purpose of this assignment we will ignore them and work with the data set as best we can.
The statistical technique used in the regression analysis. The sum of squares is a mathematical approach to determining the dispersion of the data points.
A group of young businesswomen wish to open a high fashion boutique in a vacant store, but only if the average income of households in the area is at least $25,00.A random sample of 9 households showed the following results:
The sample mean is at the 5th percentile for the SDSM? What is the sample mean? Give your answer correct to two decimal places.
Assuming a standard deviation of 4.1, give the margin of error and ?nd the 95% con?dence interval for this sample.
Construct a 95% confidence interval for the mean tar content for the new brand.
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