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If the sample mean is 8, the hypothesized population mean is 4, and the population standard deviation is 2, compute the test value needed for the z test, assume n = 1.
Use a 0.05 significance level to test the claim that this sample comes from a population with a married percentage of less than 58.6%.
How many participants would be required to ensure that a 95% confidence interval for the mean difference in the number of drinks is within two drinks of the true mean? Assumed that the standard deviation of the difference in the mean number of dri..
Normal distribution with a standard deviation of 800. what sample size would be required to be 95% certain of estimating the mean error to within 150 of the true value?
Do you think they can be solved explicitly? Take the derivative of the gamma distribution and set it equal to zero and solve for alpha and beta to find the mle?
To check this theory, 20 invoices are randomly selected and 5 are found to have errors. What is the probability that of the 20 invoices written, five or more would contain errors if the theory is valid?
your price per unit (P), and the number of units (U) sold, you can use a mathematical equation to determine your net income (NI). In this case the formula is: NI = [U * (P-VCu)] - FC.
In a particular region of Rhode Island, it is known that fisherman's trap on average of 32 pounds of lobster per day with a standard deviation of four pounds.
Determine how many miles they live from the Bank, is the mean travel distance for this sample considered a parameter or a statistic? Explain.
The function that defines the probability distribution of a continuous random variable is a?For a continuous random variable x, the probability density function f(x) represents.
What is the probability that a diner is an undergraduate and has bought a meal and what is the probability that someone who has bought a meal is a postgraduate?
Test the given claim using the traditional method of hypothesis testing.
At the 0.01 significance level is it reasonable to conclude that the modifaction reduced the number of traffic accidents?
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