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An overseas shipment of 5 foreign automobiles contains 2 that have slight paint blemishes. If an agency receives 3 of these automobiles at random, list the elements of the sample space S using the letters B and Ar for blemished and non-blemished, respectively; then to each sample point assign a value x of the random variable X representing the number of automobiles purchased by the agency with paint blemishes.
The time between arrivals of cars at the Petroco Service Station is defined by thw following probability distribution.
When formulating the conclusion to the test, why is the phrase fail to reject the null hypothesis more accurate than the phrase accept the null hypothesis?
The shelf and purchases it, and he later discovers that the lamp he purchased is defective. What is the probability that the defect came with the first shipment?
review the following information from the article a cost-benefit analysis of the new orleans flood protection system by
Find a point estimate of the population mean. Find the 95% confidence interval of the true mean. Assume the population standard deviation was 0.8.
How large a sample size will need to be selected if we wish to have a 99% confidence interval with a margin for error of .25 hours?
Compute the range, variance, standard deviation, and coefficient of variation. Compute the Z scores. Are there any outliers?
1.a sociologist is studying the effect of having children within the first three years of marriage on the divorce rate.
Discuss how a t test for a dependent variable can be of great value in applying a new approach to the treatment of aggressive behavior to a small group of students.
For each set of data, calculate mean, median, mode, range, interquartile range, standard deviation, and coefficient of variation.
Perform a chi-square test on the following data:
The mean was 56 and the standard deviation was 20. On the second exam, she scored 82; the mean was 74 and the standard deviation was 5. On which exam did she do better?
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