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Estimation of years to reach a certain population limit from the data
Utilized the equation P = 500t + 1000 to estimated how many years it will take the population to reach 12,000.
Statistics and Probability, Statistics
Joshua and his army are planning to circle Jericho seven times. Will the wall come tumbling down? The king of Jericho reports that: I ascribe probability 0.8 to "the wall of the city will fall, and Joshua ascribes probab ...
1. What are order effects, and how does counterbalancing help us deal with them? 2. Distinguish between treatment, confound, and error variance. 3. Which is worse--confound variance or error variance? Why?
Data were collected from three populations using a completely randomized design. The following describes the sample data: n1 = n2 = n3 =6 R1 = 55 R2 = 64 R3 = 78 Conducting a test of hypothesis to verify whether there is ...
A statistics instructor at a large western university would like to examine the relationship (if any) between the number of optional homework problems students do during the semester and their final course grade. She ran ...
Kindergarten children have heights that are approximately normally distributed about a mean of 38.8 inches and a standard deviation of 1.5 inches. If a random sample of 21 is taken, what is the probability that the sampl ...
When conducting a hypothesis test, if z calculated is less than z critical, you should accept the null hypothesis?
1. In stepwise regression, why might a predictor variable that correlates highly with the criterion variable not enter into the regression equation? 2. Explain how you would use regression analysis to see whether variabl ...
What three criteria must be met to establish that one variable causes changes in behavior? Which of these criteria are met by quasi-experimental designs? Which of these criteria are not met, and why?
In the Unit 4 Discussion you were asked to create a research question and then convert that question into a null hypothesis and alternative hypothesis. You also determined if your alternative is one-tailed or two-tailed. ...
In a manufacturing process a random sample of 36 bolts manufactured has a mean length of 3 inches with a standard deviation of .3 inches. What is the 99% confidence interval for the true mean length of the bolt? Please s ...
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