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Suppose that each relay in an electrical circuit has a reliability of 0.9 for a specified operating period of t hours. For independently operating components with identical life distributions, find the system reliability for each of the following.: (b) Which has the higher reliability? How could you configure a system of such relays to bring RS(t) up to 0.999?
The hypothesis test produces a z-score of z = 2.37. Assuming that the researcher is using a two-tailed test, what decision should be made?
How many participants would be required to ensure that a 95% confidence interval for the mean difference in the number of drinks is within two drinks of the true mean? Assumed that the standard deviation of the difference in the mean number of dri..
Standard deviation of 0.02 ounce. You can permit cup to overfill 4% of the time. What amount must you set as mean amount of coffee to be dispensed?
A frequency distribution was developed. The lower endpoint of the first class is 9.30, and the midpoint is 9.35. what is the upper endpoint of this class?
Hypothesis test for the difference between two means - Assume the population standard deviations are not the same. At the 0.05 significance level, is there a difference in the mean waiting time?
If the airline books 79 people on a flight for which the maximum number is 77, what is the probability that the number of people who show up will exceed the capacity of the plane?
Describe a Bernoulli experiment and give two examples. What is the connection between a Bernoulli experiment and a binomial distribution? Explain.
Ppaid full salary for the current year. a. Determine how to minimize the bus company's salary, hiring, and firing costs over the next 5 years.
An experiment involves rolling a fair six-sided die repeatedly. How many times must the die be rolled for a {6} to result at least once with probability greater than or equal to 0.6 ?
r. Patton is a professor of English. Recently she counted the number of misspelled words in a group of student essays. She noted the distribution of misspelled words per essay followed the normal distribution with a standard deviation of 2.44 word..
Suppose the population is normally distributed they make a decision to do a hypothesis test.
A sample of 400 individuals participated in the taste test and 80 indicated they like the taste. At a 5% significance level, test to determine if at least 22% of the population will like the new soft drink.
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