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Question: An unknown distribution has a mean of 45 and a standard deviation of eight. A sample size of 50 is drawn randomly from the population. Find the probability that the sum of the 50 values is more than 2,400.
If die is loaded so that 6 comes up with probability 0.2 and probabilities of 2,3,4, and 5 faces are not affected, determine the assignment of probabilities to the six faces?
A fair coin is tossed three times. Which of the following sequence is most likely to occur? H H H , H T H, T T T , all equally likey?
Prof Hardtack gave three exams last semester in a large lecture class. The standard deviation = 7 was the same on all three exams, and scores were normally distributed.
The average price of a personal computer is 949 assuming that the prices are normally distributed with a standard deviation of 100 what is the price that corresponds to the least expensive 10%.
according to chemical engineering progress nov. 1990 approximately 30 of all pipework failures in chemical plants are
Construct a stem-and-leaf plot for these data.- Compute the ratio IQR/s.- Construct a normal probability plot for these data.- Is there any evidence to suggest these data are from a non-normal population? Justify your answer.
Lincoln Democrats refused to accept Stephen Douglas as their presidential nominee in 1860 because he had insisted in his ______ that settlers in a territory could help keep slavery out by refusing to enact a slave code
What is the real world value of the y-intercept and slope in a regression equation? Other than statistics problems, why should I care?
The fact that Wt depends not only on Xt but also on averages for past time points, albeit with (exponentially) decreasing weights, suggests that changes in the process mean will be more quickly reflected in the Wt 's than in the individual Xt '
Find the mean, median, mode, sample variance, and range. Do you think that this sample might have come from a normal population? Why or why not?
The width of a confidence interval will be:
Find the possibility that Mapua will win at least 1 game out of 4 games.
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