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Briefly state the evaluation criteria for using a computed regression equation; specifically, comment on the coefficient of determination, correlation coefficient, and standard error of the estimate.
Using the telephone numbers listed in your local directory as your population, randomly obtain 20 samples of size 3. From each telephone number identified as a source, take the fourth, fifth, and sixth digits.
Let p represent the proportion of registered voters in the state that would vote for the Republican candidate. The standard error for the proportion of those who phoned in who answered "yes" is
36 values given here are based on summary statistics from research by cumming. Do you think that these data are normally distributed?
Reynolds Electronics accepts a lot from a particular supplier if the defective components in the lot do not exceed 1%. Suppose a random sample of five items from a recent shipment is tested.
A machine fills containers with a mean weight per container of 16oz. If no more than 5% of the containers are to weigh less than 15.8oz, what must the standard deviation of weights equal?
Determine the relationships among data above? Analyze with charts/graphs/tables and a discussion.
Using the empirical rule what percentage of adults is 25 - 45 has iq score bet 70 and 130.
A simple random sample is to be drawn from a population of 1200. To have 90% confidence that the sampling error in estimating p is no more than 0.03
A part of our research design is the data collection process. We often do this by sampling. Differentiate between random and nonrandom sampling methods.
Pretest-posttest design and internal validity threats - please discuss all threats to internal validity.
The random variable X has which of the following probability distributions and What is the probability that no student wins
The length of a Colorado brook trout is normally distributed. What is the probability that a brook trout's length, (Round your answers to 4 decimal places.)
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