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A new fuel injection system is experiencing failures. The reliability function is:
R(t) = (t + 1)^-3/2 t>=0
t is in years. The reliability over its intended life of 2 yr is 0.19, which is unacceptable. Will a burn in period of 6 months will signaficantly improve upon this reliability ? If so, by how much?
ph in the water is 7 at the .05 significance level. Her alternative hypothesis is that the water does not have a pH of 7. For which p-value will she fail to reject the null hypothesis?
Using a test, 80% of Down's Sydrome cases can be identified, while 5% of normals are detected as positive. What is the sensitivity and specificity of the test?
1. when performing a hypothesis test and the population standard deviation is known what is the p-value for a
the table below shows the price of a volatile stock from the months january 1999 through december 1999 as determined by
1. an experiment has four equally likely outcomes e1 e2 e3 and e4.a. what is the probability that e2 occurs?b. what is
if npgt and nqgt5 estimate pmore than 4 with n12 and p0.7 by using the normal distribution as an approximation to the
How many solutions exist for a quadratic equation? How do we determine whether the solutions are real or complex? Translate the following into a quadratic equation, and solve it, showing your work:
The random variable X is the distribution of siblings of a student selected at random from a particular secondary school. Its probability distribution is given in the table.
The student body of a large university comprises 60% female students. Elucidate what is the probability that the students in the sample exactly two are female?
A health and safety committee is to be selected from all the people who work at a local factory. The committee is to consist of four members selected randomly from a list of ten names.
The mean number of passengers per flight is 160 with a standard deviation of 20. The aircraft used for the route has 200 seats.
Draw the tree diagram for experiment and complete the table below that represents the probabilities for each of the values that the random variable X will asume.
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