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In order to determine the summer unemployment rate among college students, a pilot sample was taken; and it was determined that fifteen percent of the individuals in the sample were unemployed. Using the results of the pilot study and a 95% confidence, what size sample would be required to estimate the proportion of unemployed college students if we want the margin of error not to exceed 5 percent?
Elucidate the null and alternative hypothesis for the difference among the two means. In testing the difference between the means of two.
At the .05 level, you are testing whether there is a significant difference in the proportions of college students and similar aged non college students having accidents during the two year period. Is this a 1 or 2 tail test?
If the Sum of Squares for Treatments (SST) is 10% of SS(Total), and the Sum of Squares for Blocks (SSB) is 20% of SS (Total), find the F values for this experiment.
How would you choose an appropriate level of significance for your statistical test? What are the possible outcomes and limitations of your statistical test?
Give the example of when it is suitable to apply mixed method research in human services field. Sum-up how scientifically sound research supports function of human services manager.
A sample size n=100 is taken from a population that has a proportion p= 1/5. If, in the sample, ^p=0.25, will the 95% confidence interval for p contain the true value of p^is at top p at bottom ^p
In a certain distribution of numbers the mean is 60 with a standard deviation of 8. Use Chebyshevs theorum to tell the probability that a number lies in each interval.
3 cards are randomly selected without replacement from an ordinary deck of 52 playing cards. Compute the conditional probability that the first card selected is a spade, given that the second and third cards are spades.
Do the data in the sample represented in the Excel file support his contention at the .05 level of significance?
The Minneapolis Tribune ran an article on gender differences in shopping behavior. When 400 women were asked to respond to the question "Where I shop is influenced by which store has a greater variety," 60% answered "Yes.
An additional $3,000 of net working capital will be required throughout the life of the project. What is the project's net present value if the required rate of return is 11 percent?
Find the probability that an eligible voter selected at random will have the following characteristics.
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