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Descriptive statistics for given data.
Weekly salaries (in dollars) for a sample of registered nurses are listed.
774 , 446 , 1019 , 795 , 908 , 667 , 444 , 960
Find the range, variance, and standard deviation of the data set. Interpret the results in the context of the real-life setting.
Sample data arranged in ascending order:
Salaries of Registered Nurses
444
446
667
774
795
908
960
1019
The ANOVA procedure is a statistical approach for determining whether or not:
Find out the suitable critical value(s) for this situation given a 0.05 significance level. Find out/compute the value of sample test statistic.
Assess the model fit for the multiple linear regression model using appropriate statistics and graphics.
Would Kruskal-Wallis be the suitable statistical procedure to test this Research Question (RQ)? Describe your answer. When would you use Chi-Square test rather than One-Way Anova?
The ages of cars owned by all employees of a large company have a bell shaped distribution with a mean of 8 years and a standard deviation of 2 years. Using the empirical rule, find the approx. percentage of cars (owned by those employees) that are b..
Based on surveys conducted in 1989 and 1999, a researcher compared the proportion of high school age females interested in a career in science in 1989 with the proportion in 1999. He concluded that the proportions were not significantly different ..
Assume a population standard deviation of 450-kilowatt hours. Determine the standard error of the mean.
Using an alpha level of 0.05, please use SPSS to perform a one-way ANOVA and then determine whether the data below provide evidence for Theory A, Theory B, or Theory C. In other words, is one theory stronger than the others?
For sample of size 100, what is the mean and standard deviation of the sample mean.
Using a critical value, test hypothesis at the 1% level of significance.
How many degrees of freedom must researcher use in her t-test critical value supposing that variances are equal?
For a t distribution with 16 degrees of freedom, find the area, or probability, in each region.
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