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A special industrial battery must have a life of at least 500 hours. A hypothesis test is to be conducted with a 0.04 level of significance. If the batteries from a particular production run have an actual mean use life of 485 hours, the production manager wants a sampling procedure that only 10% of the time would show erroneously that the batch is acceptable. What sample size is recommended for the hypothesis test? Use 20 hours as an estimate of the population standard deviation.
Below are one hundred pseudorandom numbers from a uniform pdf. Set up and test the appropriate goodness-of-fit hypothesis. Let α = 0.05.
In the Arnold's Muffler example for the exponential distribution, the average rate of service was given as 3 per hour, and the times were ex-pressed in hours.
A pizza store chain wants to see which pizza toppings customers seem t olike the best. A random sample of people were asked about their pizza preferences.
markov chain-random walk on a circlea a particle moves on 3 points situated on a circle. at each step it is equally
give an example of how anova may be useful for your area of research. state a null and alternative hypothesis and
the demand for a spare part is three per day according to a poisson distribution. the parts can be obtained from a tool
Use stratified random sampling to estimate the mean or total of a population of your choice. In the process of carrying out the survey and making the estimate, think about or discuss with others the following:
Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance.
Determine the characteristic values of the given matrix and find the corresponding vectors:
The procedures +, *, and list take arbitrary numbers of arguments. One way to define such procedures is to use define with dotted-tail notation.
The probability the second truck is available is .51, and the probability that both trucks are available is .41: What is the probability neither truck is available?
The accompanying observations are numbers of defects in 25 1-square-yard specimens of woven fabric of a certain 1, 5, 4, 6. Construct a c chart for the number of defects.
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