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Many vehicles used in space travel are constructed with redundant systems to protect flight crews and their valuable equipment. In other words, backup systems are included within many vehicle components so that if one or more systems fail, backup systems will assure the safe operation of the given component and thus the entire vehicle. For example, consider one particular component of the U.S. space shuttle that has n duplicated systems (i.e., one original system and n - 1 backup systems). Each of these systems functions, independently of the others, with probability 0.98. This shuttle component functions successfully provided that at least one of the n systems functions properly. Find the probability that this shuttle component functions successfully if n - 2.
The times it takes workers to complete a task at a certain assembly plant are normally distributed with mean = 10 minutes and standard deviation = 2 minutes.
There is no proof the new policy is more effective, but we cannot finish the policy has no effect on smog. Interpretation of P-value for the given context.
The weight of the oranges, in pounds (1 pound = 16 ounces) is a random variable with standard deviation
Are there any formulas or graphs for Correlational statistical procedures and Quantative research methods? I'm writing a paper and would like to throw in a few examples with explanation.
ANOVA is a powerful statistical test. How does ANOVA differ from other parametric tests? What are the conditions that must be met to use a one-way ANOVA?
Find the sample size for the 95% confidence interval used to estimate the population proportion.
The population of IQ scores forms a normal distribution with a mean of u=100 and a standard deviation with a mean of sigma=15.
What is the purpose of sampling? What are some concerns and dangers of sampling? How important is the sample design to data validity? Explain.
Suppose there are two samples of size 6 and 7, with a rank sum of 58 in the sample of size 6. Using the Wilcoxon rank-sum test, evaluate the significance of the results, assuming there are no ties.
Annual family dental expenses for the families of a random sample of ten employees of a company are given below. You can assume the family dental expenses for the employees of the company are normally distributed.
Makers of generic drugs are required to demonstrate that their generic drug does not differ significantly from the "reference" drug it is intended to imitate.
Assume that the following four examines were tested as part of a large group that had a normally curved distribution.
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