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Suppose that the probability distribution of a random variable x can be described by the formulaP(x) = x/15
For each of the values x = 1, 2, 3, 4, and 5. For examples, then, p(x=2) = p(2) = 2/15
a. Write out the probability distribution of x.b. Show that the probability distribution of x satisfies the properties of a discrete probability distribution.c. Calculate the mean of x.d. Calculate the variance and standard deviation.
In each case, sketch the two specified normal curves on the same set of axes: A normal curve with = 20 and o = 3, a normal curve with = 20 and o = 6.
In a test of a gender-selection method, 14 babies are born and 10 of them are girls. Find the number of different possible sequences of genders that are possible when 14 babies are born
As a way of fund raising, you decide to set up a hot dog stand, after a few weeks of doing this you sell 8 hot dogs every 10 minutes.
American Demographics reported the results of a survey on the planning habits of men and women. In response to the question.
Specify the appropriate null and alternative hypotheses if we wish to test the research hypothesis that the mean GHQ score for all employed men exceeds 10.
A management trainee is selected at random. What is the probability that the person selected is a female who did not attend college?
each person received was determined by randomization. For each person who was sent one of the surveys, the researcher recorded whether or not a completed survey was returned.
The average cost of repairing a VCR is $80 with a standard deviation of 19. if one VCR is repaired, find the probability the cost is between 70 and 90.
Search the library for a scholarly journal article of a study that presents the results using correlation analysis. Summarize the article, explain how the correlation was used, and the value of correlation analysis.
Evaluate and interpret the coefficient of correlation and At the 0.05 level of significance, is there a significant linear relationship between calories and fat?
In its third year, a football team averaged 16,050 fans per game, with a standard deviation of 2,500 fans. What is the probability that the number of fans at any given game was greater than 20,000?
Find the value of q-hat from proportion and degrees of freedom used to find the t-score.
Set up the null and alternative hypotheses for Coca-Cola. In terms of Coke's decision to introduce the new bottle or not, what is a Type I error?
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