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A communications network has a built-in safeguard system against failures. In this system if line I fails, it is bypassed and line II is used. If line II also fails, it is bypassed and line III is used. The probability of failure of any one of these three lines is .01, and the failures of these lines are independent events. What is the probability that this system of three lines does not completely fail?
Using the appropriate statistical procedure on the SPSS, test the between group means for a significant difference.
The task will take between 8 minutes & 11 minutes. Find this probability. The engineer would also like to know what the time is such that 40% of the task times are less than this value.
if a manager believes that the required sample size is too large for a situation in which she desires to estimate the
Estimate the average score at age 35 for all the individuals who scored 115 at age 18. Predict the score at age 35 for an individual who scored 115 at age 18.
Estimate with 95% confidence the mean reduction in time it takes for someone who has taken the sleeping pill to fall asleep.
The quality-control manager at a light bulb factory needs to determine whether the mean life of a large shipment of light bulbs is equal to 375 hours. The population standard deviation is 100 hours.
How many different ways to be appointed head of a division How many different ways could the three new heads be appointed?
for each of the following situations indicate how you might use ratio or regression estimation.a estimate the
Refer to the sensitivity report for Problem 14 in Figure 8.19.
A company makes molded plastic toys. They study the plastic injection process into the molds. A common cause of variation and What are the control limits for an chart
What is the probability both stocks appreciate during the period? What is the probability the bank stock appreciates but the utility does not? What is the probability at least one of the stocks appreciates?
What is the standard deviation of the number of requests in a 10 hour work day? Give your answer to four decimal places.
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