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Concept explainers
(a)
To calculate: The mean rounded to the nearest dollar for the salaries of research and development department of Richman chemicals where the salaries of the departments are $48397, $27982, $42591, $19522, $32400 and $37582.
(b)
To calculate: The median for the salaries of research and development department of Richman chemicals where the salaries of the departments are $48397, $27982, $42591, $19522, $32400 and $37582.
(c)
The mode for the salaries of research and development department where the salaries of the departments are $48397, $27982, $42591, $19522, $32400 and $37582.
(d)
A statistical interpretation based on the mean median and mode for the salaries of research and development department where the salaries of the departments are $48397, $27982, $42591, $19522, $32400 and $37582.
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Chapter 7 Solutions
EBK BUSINESS MATH
- 1. (i) Explain the difference in application between the Mann-Whitney U test and the Wilcoxon Signed-Rank test, i.e. in which scenarios would each test be used? (ii) What is the main procedure underlying these nonparametric tests? [3 Marks]arrow_forwardf(x) = x + 1; x(x) = x − 2. Solve the equation for x : |f(x)+4(x)| = |f(x)|+|4(x)|. 00arrow_forwardSolve no chatgpt already got wrong chatgpt answerarrow_forward
- Not use ai pleasearrow_forwardYou may need to use the appropriate appendix table or technology to answer this question. You are given the following information obtained from a random sample of 4 observations. 24 48 31 57 You want to determine whether or not the mean of the population from which this sample was taken is significantly different from 49. (Assume the population is normally distributed.) (a) State the null and the alternative hypotheses. (Enter != for ≠ as needed.) H0: Ha: (b) Determine the test statistic. (Round your answer to three decimal places.) (c) Determine the p-value, and at the 5% level of significance, test to determine whether or not the mean of the population is significantly different from 49. Find the p-value. (Round your answer to four decimal places.) p-value = State your conclusion. Reject H0. There is insufficient evidence to conclude that the mean of the population is different from 49.Do not reject H0. There is sufficient evidence to conclude that the…arrow_forward17arrow_forward
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