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Failure times for a randomly failing component are 3.3, 14.3, 27.1, 41.3, and 92.2 hours. Find the MTTF and standard deviation using:
a) moment estimation.
b) maximum likelihood estimation.
Develop a probability distribution for the number of students in the sample who watch soap operas.
You draw two cards from a standard deck of 52 cards, but before you draw the second card, you put the first one back and reshuffle the deck.
What is the theoretical probability that Mr. Nerdly assigns 10 homework problems as a result of a randomly selected student playing the birthday game?
Construct a 90 percent confidence interval for the true mean weight. Describe factors which might cause variation in the weight of Tootsie Rolls during manufacture.
To test the difference between two means using two mean z test.
Be sure the appropriate assumptions and conditions are satisfied before you proceed.
If x is a binomial random variable where n = 100 and p = .1, find the possibility that x is less than or equal to 10 using the normal approximation to the binomial.
Five test vehicles of each kind were crashed, with results given below. Research question: Are mean crash damages the same for these 3 vehicles?
The probability of the patient being chosen at random as having meningitis as only site of infection is?
For a binomial probability experiment, with n=150 and p=.2, it is appropriate to use the normal approximation to the binomial distribution.
Sketch the distribution of sample means for sample of n = 25 scores from this population.
Are all the events in this distribution mutually exclusive? Describe in detail.
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