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Give reason for the probability distribution
Determine the distributions given below represent a probability distribution. Justify your answer.
x
1
2
3
4
P (x)
1/8
3/8
Difference between the discrete and the continuous random variable
Assume that demand for the upcoming weekend is normally distributed with a standard deviation of 30.
About what percent of the observations lie between 55 and 65?
For each of the following problems, assume that the homogeneity of variance assumption has not been met and that you will need to use the adjusted Welch statistic.
What is the appropriate conclusion based on the outcome of the hypothesis test?
What is the probability that a cereal would be high calorie, given that is low fiber? In other words, what is P (high calorie, given low fiber)?
Illustrate what decision should be made depended on the mini-max regret criterion. Decision based on the Mini-max criterion.
For a binomial probability experiment, with n=150 and p=.2, it is appropriate to use the normal approximation to the binomial distribution.
Obtain the simple linear regression equation, then analyze the residuals by (a) constructing a histogram
When the level of confidence and sample size remain the same, a confidence interval for a population proportion π will be __________ when p(1-p) is larger than when p(1-p) is smaller.
The American Automobile Association checks the prices of gasoline before many holiday weekends.
Use alpha level. 05 to compute and interpret Pearson's r and to test whether it is important (using all your steps for hypothesis test).
If random sample of thirty six customer transactions points out that sample mean withdrawal amount is $172, is there evidence to think that population mean withdrawal amount is no longer $160? Determine the mean of data above?
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