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let X have one of the following distributions:
X: x1 , x2 , x3 , x4H0: 0.2 , 0.3 , 0.3 , 0.2H1: 01 , 0.4 , 0.1, 0.4
if the prior probabilities are P(H0)= P(HA) which outcomes favor H0?what prior probabilities correspond to the decision rules with a= 0.2 and a =0.5
The neyman pearson paradigmThe probabilities of type 1 error is called the significance level of the test.
A) Resistant statistics should always be used. B) Resistant statistics should be used when the data is not bell-shaped. C) Sensitive statistics should be used when the data is not bell-shaped. D) Sensitive statistics should always be used. E) Resista..
What is the mean of the sampling distribution? What is the standard deviation of the sampling distribution? What is the probability that the mean tuition and fees of the sample is greater than $20,000?
If a gambler rolls two dice and gets a sum of four, he wins $10; and if he gets a sum of three, he wins $25. The cost to play the game is $5. What is the expectation of this game?
You are conducting an evaluation of services at a social service agency. One of the evaluation issues is finding out whether male clients rate the quality of casework services as highly as do female clients.
A researcher wishes to construct a 95% confidence interval for a population mean. She selects a simple random sample of size n=20 from the population.
For the data giben below, prepare a R-chart. Note that the sample size is three.
The cost of one serving of peanut butter ( in cents) for a random sample of 19 jars of peanut butter was found to be:
Determine the 95% confidence interval for your estimate what data have you utilized as the basis of your predictions what suppositions have you made.
If you had only one minute to estimate the standard deviation of a frequency distribution using only the information that can be obtained from a stem and leaf display, how would you do it and why?
Prepare a power curve for this decision rule
The following data shows the service ratings for eight ramdomly selected small ships, eight randomly selected large ships. All ships are rated on a 100-point scale, with higher valuse indicated better service (traveler Feb 2003)
The standard deviations s1 and s2 can be used when Ó1 and Ó2 are unknown and you believe that the underlying distribution is normal. Then, you would use s1 and s2 with the t-test for hypothesis testing.
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