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Let X be binomial with parameters n=15 and p=.2
(a) Find the expression for density for X
(b) Find the expression for the moment generating function for X
(c) Find E[X], E[X^2] and Var[X]
(d) Find P[X <=1] by evaluating the density directly.
the quantity of milk in a bottle is normally distributed with mean 1000ml. find the standard deviation given that the
The data in below represent the closing value of the Dow Jones Industrial Average (DJIA) over the 29 year period from 1979 through 2007.
1. if a population mean is 300 and the sample mean is 400 the difference of 100 is calleda.standard errorb.sampling
Dark treatment is between 0.26 and 1.14 cm shorter than the (population) mean for plants with the Light treatment. Discussion: Are Dark shorter than Light?
the following are mood scores for 12 participants before and after watching a funny video clip higher values indicate
A doctor believes that the standard deviation of systolic blood pressure is 450. A random sample of 24 patients found a standard deviation of 520. Assume the variable is normally distributed and a = 0.01. What are the critical values?
What is the importance of pretesting questions and instruments? What are risks of not doing this? Provide an example
In a survey of 100 viewers, 36% indicated that they watch the late evening news on this local CBS station. What is your decision if α = 0.01?
Before giving the denition of the binomial probability distribution, try to derive it by using the sample-point approach. How?
listed below are speeds mih measured from southbound traffic on i-280 near cupertino california based on data from
If the standard deviation is $10,000, can the cable manager conclude that there is a difference? Test at alpha = 0.10.
At a 5% level of significance, is there sufficient evidence that the population mean waiting time is now less than 3.7 minutes?
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