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Consider a random variable X which takes on values 1, 2, and 3 with probability 0.25, 0.5, and 0.25, respectively (i.e., P[x=1] = 0.25, P[x = 2] = 0.50, and P[x = 3] = 0.25). Determine the mean and variance of X. Plot the probability density function (pdf) and cumulative distribution function (CDF) of X.
Would you expect the variance to be larger or smaller than the variance associated with the probability function used in the previous exercise? Verify your answer by computing the variance for the probability function given here.
Utilizing the .05 level, do the results support the psychologists' theory. Elucidate your answer to somebody whom has never had a course in statistics.
Discuss the European motives for expansion and colonization in the New World. Then describe the different colonial transplantations.
What is the probability that a roulette ball will come to rest on an even number other than 0 and 00?
Calculate a sample mean and standard deviation and then reject shipment if the sample average falls below some agree-upon value.
question 1 according to the u.s. bureau of labor statistics 75 of the women 25 through 49 of age participate in the
From the mail service with immediate delivery of the Postal Service in the United States, 90% is received by the recipient the next day.
question two automatic dispensing machines are being considered for use in a fast-food chain. the first dispenses an
part 1 what are the conditions for using the standard deviation formula when conducting a significance test? be
How would you describe American Indian policy after the Civil War? What, do you think, was the purpose of this policy?
Question 1 A The data set oducat ion. dt a contains data on the years of education of a random sample of 718 Americans. as well as the same information for both of their parents. It is likely that parents' achievements have some predictive power f..
a) What's the mean difference in weights of the melons? b) What's the standard deviation of the difference in weights?
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