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For the midcourse PSYC105 test M = 39 (out of 60) and SD = 11.2. What is the deviation score for a person scoring 33 in the test? Complete the formula and show your working and answer.d = Score - Mean d= 33-39 = -6
What is the sum of all deviation scores for the test? For the final exam M = 45 (also out of 60), SD = 9.4. What is the sum of all deviation scores for the exam?
To check this theory, 20 invoices are randomly selected and 5 are found to have errors. What is the probability that of the 20 invoices written, five or more would contain errors if the theory is valid?
A sales manager wants to know if the sales productivity of her east region is greater than the sales productivity of her west region
Two different simple random samples are drawn from two different populations. The first sample consists of 20 people, with 10 having a common attribute.
On which test did he do better compared to the rest of the class?
The pooled variance of two samples is:
Use the expected value approach to decide whether to market the new product. Because of the high dollar values involved, especially the possibility of a $100,000 loss.
A political scientist obtained recordings of election-night acceptance speeches of seven newly elected representatives to the US Congress.
WLD Incorporated, a national data-collection agency, estimates that 55% of all customers at home warehouse stores (in the United States) own their own home.
What is the most probable number of patients arriving each Saturday and give the main assumptions we make when we model the above situation using a Poisson distribution.
Iit is known that signal change in this brain area is normally distributed with mean of 35 and standard deviation of 10. By using .01 level, what must researcher conclude?
State the null and alternative hypotheses for the ANOVA (include definitions of parameters). What assumptions do we need to proceed with ANOVA?
A nationwide sample of influential Republicans and Democrats was asked as part of a comprehensive survey whether they favored lowering environmental standards so that high-sulfur-coal could be burned in coal fired power plants.
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