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Suppose Xt follows a random walk model (i.e Xt = Xt-1 + et ) et ~ i.i.d (0.5, 1)
a) Compute the mean and variance of (Xt) when t=5 and we assume X0= 0
b) What is variance of X5 - X3
What if the size for each sample were increased to 20? Would a sample mean of 115 or more be considered unusual? Why or why not? Why is the Central Limit Theorem used?
Find the range and the standard deviation of the times.
a national study has determined that people who work full time average 43.4 hours worked per week. assume that the
Using a 1% level of significance, can we say that there is a difference in the average waiting time between the two shops? Find the critical value(s).
What are different methods of graphical representation of data? Explain them. Distinguish Histogram and Histogram clearly with illustrations.
please propose a study and write a description of the study below is a tentative guideline for the paper.a. write
A discussion of extreme weather reports that: "In most states, hurricanes occur infrequently. Yet, when a hurricane hits, the losses can be catastrophic.
He is quoted by the Associated Press (January 30, 2000) as saying, "Field's sample in that poll equates to one out of 17,505 voters," and he added that this was so dishonest that Field should get out of the polling business! If you worked on the ..
In Seattle, the sample size was 22, and the mean duration before resoling was 8.5 months. What is the overall mean duration before resoling is necessary for brand A jogging shoes?
Describe the unique fundamentals of a qualtitative research study, addressing the following:
Fit a straight-line model through the origin; i.e., fit E(y) = β1x.- Calculate SSE, s2, and s.- Do the data provide sufficient evidence to indicate that x and y are positively linearly related?
In this problem you will write code to simulate the Markov chain from the up-down stock problem we have been discussing in lecture
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