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1. Calculate the sample size needed given these factors: one-tailed t-test with two independent groups of equal size small effect size (see Piasta, S.B., & Justice, L.M., 2010) alpha =.05 beta = .2 Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample half the size. Indicate the resulting alpha and beta. Present an argument that your study is worth doing with the smaller sample. 2. Calculate the sample size needed given these factors: ANOVA (fixed effects, omnibus, one-way) small effect size alpha =.05 beta = .2 3 groups Assume that the result is a sample size beyond what you can obtain. Use the compromise function to compute alpha and beta for a sample approximately half the size. Give your rationale for your selected beta/alpha ratio. Indicate the resulting alpha and beta. Give an argument that your study is worth doing with the smaller sample. 3.In a few sentences, describe two designs that can address your research question. The designs must involve two different statistical analyses. For each design, specify and justify each of the four factors and calculate the estimated sample size you'll need. Give reasons for any parameters you need to specify for G*Power.
1. joe and sam each invested 20000 in the stock market. joes investment increased in value by 5 per year for 10 years.
Find the function representing the demand p(x) , where x is the number of the television sets sold per week and p(x) is the corresponding price.
An ice cream company finds that at a price of $5.00 demand is 6300 units. For every $0.15 decrease in price, demand increases by 135 units. Find the price and quantity sold that maximizes revenue. What is the price and quantity?
In this module's discussion, find the slope of an object either where you live, where you work, or outside somewhere. Examples might include a ladder positioned against a wall or against a house, a banister on a set of stairs, a slide in a park, e..
write a rational expression for his average speed. 2) On Tuesday he drove for 6 hours at the same average speed. Write a rational expression for his distance on Tuesday.
The fourth person got 8 tickets, and there were 5 tickets left for the fifth person. Find the total number of tickets given away. Show and explain work please.
Find the average weekly breakdown cost.
A box with a square base of side x is three times higher than it is wide. Express the volume V of the box as a function of x.
Select two samples of 20 values from the data in Data Set IV in Appendix D. Test the hypothesis that the mean heights of the buildings are equal.
How much energy is needed to pump all the water to the top of the tank? How much energy is needed to pump all the water to a point 3 m above the top of the tank?
the resident population of south california (in thousands) was 3860 in 1997 and 4107 in 2002 .let t equal 7 represent 1997. write linear model for the population as afunction of time t.
Creating matlab code using these linear algebra concepts. 1500 points for help with any of these! Preferably all but I've posted this multiple times and it seems no one can help
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