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Professor Smith's research assistant is hard at work again. This time the Professor has asked the assistant to begin some basic inferential analysis. The assistant has been given a data set consisting of 45 observations taken by the professor for a study into neighborhood design and crime. The assistant is now at the point of trying to apply one of the theoretical distributions to the results obtained in the first round of analysis. Should the assistant try to apply the principles of the Z distribution or those associated with the t distribution?
The average age of statistics students nationwide is 22. The standard deviation is 2.5 years. Assume the age is a normally distributed variable. Find the probability that one student selected at random is older than 23.
Write the hypothesis in words, being careful to specify the populations and the parameter of interest, by completing this sentence.
surveys have become an important component of american life. they directly affect us in so many ways including public
Define random variables and use them to express the total amount the company will have to spend to send these delegations to the two meetings.
if you are dealing with numbers, both grouped data and ungrouped data will fall within a range of numbers.
Is there a statistically significant relationship between gender and party preference?- Compute column percentages for the table to clarify the pattern of the relationship.
The following dotplot describes the lengths, in pages, of a sample consisting of 20 reports generated by a consulting firm during the past 3 months. Based on the dotplot, what are the values for the median and the first and third quartiles?
If the company marks up total cost by 0.40, what price should be charged if 68,000 units are expected to be sold?
Explain in detail the Great Schism of 1054 and it theological motivations 1- Write 1 page 2- include an authentic sourse from a book, or a news paper article
The null hypothesis would say there were no illegal drugs used. Pick the most appropriate cutoff level for the P-value, 0.10 or 0.05 or 0.01
If researcher obtains sample mean of M = 88, which combination of factors is most likely to result in rejecting null hypothesis?
If research in the business/management area cannot be 100% scientific is there any use in doing it?Discuss this statement in class or in groups.
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