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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
If a statistics professor plans classes so carefully that the lengths of her classes are uniformly distributed between 48.0 and 53.0 minutes what is the probability that a given class period runs greater than 51.25 minutes.
Excel or Minitab users: The data set is available in file named JobSalary. All data sets can be found in your eBook or on your Student CD. Use = .05 to test for a significant difference among the mean annual salaries for the three job fields.
a newspaper article reported that a poll based on a sample of 1150 residents of a state showed that the states
a researcher needs to conduct a suitable nonparametric test to compare two dependent variables. which of the following
Is there evidence that the population mean amount is different from 8.17 ounces? (Use a 0.05 level of significance and determine the p-value and interpret its meaning.
the total number of cars and light-duty trucks sold in 2013 was 2.234 million while 1.346 million were sold in 2009.
Assume that the price of non-dividend paying stock is $32, its volatility is 30%, and the risk-free rate for all maturities is 5% per annum. Use derivagem to calculate the costs of setting up the following positions.
q1. with random sampling there is homogeneity within a subgroup or stratum.a. judgmental b. simple c. clusterd.
Calculate the t test statistic. Can you reject ρ = 0? (e) Use Excel's function =TDIST(t,deg_freedom,tails) to calculate the two-tail p-value.
1.a sample of breakfast cereals yields the following data on the grams of carbohydrates per serving.nbspnbspnbsp 19nbsp
How large a sample should you take if you want to be 95% confident of the results and you want the error of the confidence interval to be no more than .05?
we are interested in relationship satisfaction of young adults before and after they go off to collegeuniversity which
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