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the mean weight for a certain type of fish is known tow be 28.0 ounces with a standard deviation of 2.5 ounces. a qame warden catches and weighs 30 fish from a certain pond to check if they are significantly larger than the mean stated above. if the mean of the sample larger population of this fish?use either L=1% or L=5%.
At the time she was hired as a server at the Grumney Family Restaurant, Beth Brigden was told, "You can average $72 a day in tips." Assume the population of daily tips is normally distributed with a standard deviation of $2.45.
Citrus Rental is a popular car rental agency that has a history of having too few cars available, so that its available cars are overdriven. The mean monthly mileage over the years for Citrus cars has been about 1550 miles per month.
For each of the following three scenarios, state which hypothesis test you would use from among the four introduced so far: the z test, the single-sample t test, the paired-samples t test, and the independent-samples t test.
We assume that the population is approximately normally distributed. Find the confidence interval: for a confidence level of 95%:
The time until a component is taken out of service is uniformly distributed on 0 to 8 hours. Two such independent components are put in series, and the whole system goes down when one of the components goes down.
Age effects in medical care. The type of medical care a patient receives may vary with the age of the patient. A large study of women who had a breast lump investigated whether or not each woman received a mammogram and a biopsy when the lump was ..
The mean of a standard normal probability distribution.
The network is said to be robust if at least one of the three servers operate more than 2 years. What is the probability that the network is robust?
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..
You have been asked to develop a study of the effects of watching Sesame Street on childrens' gender role orientations, intelligence, or sociability.
Test the claim that for the adult population of one town, the mean annual salary is given by μ = $30,000.
Choose a new car or light truck at random and note its color. Here are the probabilities of the most popular colors for vehicles. Choose two vehicles at random. What is the probability that both are silver or both are white?
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