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Question: The lifetime of a certain type of colour television picture tube is known to follow a normal distribution with a mean of 4600 hours and a standard deviation of 400 hours.
Calculate the probability that a single randomly chosen tube will last:
a. more than 5000 hours b. less than 4500 hours c. between 4700 and 4900 hours
If I have unnormal data with n=15, and there are 2 samples. What test do I use? How do I make the data normal if the samples contain zero, b/c it's measuring time?
Construct the payoff table for this decision situation. Compute the expected value of each alternative amount of milk that could be stocked, and select the best decision.
At the 0.05 significance level, can we conclude that the mean waiting time at the Warren Road MacBurger is less than 3 minutes?
Assume H- to be true. What is the probability that this decision strategy will result in a type I error. Sketch the sampling distribution and put in the region of rejection?
For a normal probability distribution, about 95 percent of the area under normal curve is within plus and minus two standard deviations of the mean and practically all (99.73 percent) of the area.
What are the advantages and disadvantages of each? Explain how the empirical rule help explain the ways in which the values in a set of numerical data cluster and distribute?
question 1 the standard deviation of the amount of fat in whole milk is claimed to be no greater than 0.50 by the
Conduct a hypothesis test to determine if the average cardiac outputs measured by the two evaluators differ. Use a significance level of 0.02.
Evaluate the performance of the judges.
Ball bearings are mannormally distributed with a meanufactured with a diameter of 5 mm. But the process has variation, so the diameter is normally distributed with a mean of 5 mm and a standard deviation of .02 mm. A) What proportion of ball beari..
suppose that a financial analyst wants to evaluate the variability of the prices of a new stock in the market. the
Find the critical value, t0, to test the claim that the mean1>mean 2. Two samples are randomly selected and come from populations that are normal. The sample statistics are given below. Assume that standard deviation 2/1 is not equal standard devi..
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