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Assume that a single radar unit used to detect incoming missiles has a probability of 0.90 of correctly detecting an incoming missile attack. Furthermore, assume that four such individual and identical radar units (each with an individual probability of 0.90 of detecting an incoming missile attack) are used to create a radar installation system with the task of detecting incoming missile attacks.
A. What is the probability that a single radar unit correctly detects an incoming missile attack?
B. What is the probability that this multi-radar system correctly detects an incoming missile attack?
C. From the probabilities that you calculated in parts A and B, what is the advantage of the redundancy that is built into this multi-radar system?
At α = 0.01, is the degree of certainty independent of credits earned?
A sample of 10 persons is used to measure the effectiveness of two massage techniques. The effectiveness of the techniques is measured by the number of days that pass by before the subjects feel the need for another massage session.
Variance of 4.2 and mean of 23.2 were calculated. Find out 95% confidence interval on mean and standard deviation. Describe any potential problems with this analysis.
Seventy million pounds of trout are grown in the U.S. every year. Farm-raised trout contain an average of 32 grams of fat per pound, with a standard deviation of 7 grams of fat per pound.
A film alliance used a random sample of 50 U.S. citizens to estimate that the typical American spent 78 hours watching videos and DVDs last year. The standard deviation of this sample was 9 hours.
Calculate correlation coefficient for these sample data.
Test for single mean - What do you conclude - Compute z and P
What is the value of the population mean? What is the best estimate of this value?
Determine estimated average starting salary for school with average GMAT of 600 points?
Does the overall data support the mayor's claim?
Assuming that the dogs did better than what would be expected with random guessing, did they do well enough to be used for actual medical diagnoses? Why or why not?
Describe the shape of the distribution? what proportion of the players had no hits? how many players had 4 or fewer hits? what percentage of the players had one or fewer hits?
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