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Fit a linear trend equation to the following data describing average hourly earnings of U.S. production workers. What is the trend estimate for 2010?
Year:
2001
2002
2003
2004
Shipments:
$14.53
$14.95
$15.35
$15.67
if your anova hypothesis test shows no interaction between two factorsa assume that there is no effect due to either of
find the number z such that 28 of all observations from a standard normal distribution are greater than
a hotly disputed proposition x will be on the ballot in november elections. a poll of n1 100 people shows that p1 50
A confidence interval for the price of gasoline from a random sample of 30 gas stations in a region gives the following statistics:
1. you are trying to determine the average age of students at cuyamaca college. the average age of 50 randomly selected
A teacher wants to know if students in her biology class did significantly better on an exam after instruction using authentic learning. The scores pre and post test are listed below. Based on an α = .05, what can the teacher conclude?
Determine if the values are uniformly distributed. The researcher is using the chi-square goodness-of-fit test for this analysis.
Proportional to xi2, that is Var(εi)=σ2 xi2. Suppose that we use the transformation y'=y/x and x'=1/x. Is this a variance-stabilizing transformation?
Select the variable team salary and find the mean, median, and the standard deviation
Fortune published a list of the 10 largest "green companies"-those that follow environmental policies. - Find the mean, variance, and standard deviation of the annual revenues.
Can we conclude that there is a difference in number of citations written between the officers? Use the 0.05 level of significance.
What is the probability a random sample of 75 students will provide a sample mean SAT score within 20 of the population mean?
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