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Suppose that you have the following data:
x 3 5 2 6 1 4 y 25 110 9 250 3 71
a) Draw the scatter diagram. Does it appear that x and y are related? If so, how?
b) Test to determine whether there is evidence of a linear relationship.
The following frequency distribution was obtained. The data values are in hours. Construct a histogram for the data .
The chance both flights are full is 0.6. Are the two flights being full independent events and What was the mean ranking for the females in this class
New study is to use 90% confidence level. Estimate is to be within 1 percent of population proportion. Determine the essential sample size?
Evaluate the probability that patient taking drug will experience flu symptoms.
Among the half that had surgery, 80% showed improvement after three months, but only 54% of those who used the wrist splints improved. what's the standard error of the difference in the two proportions?
Assume the population standard deviations are not the same. At the .05 significance level, is there a difference in the mean waiting time?
Classifcation Which of the following are continuous variables and which are discrete?
The assembly time for a product is uniformly distributed between 6 to 10 minutes.
Identify the sampling distribution to be used: the standard normal distribution or the Student's t distribution. Find the critical value(s).
In Colorado Springs the newspaper runs mug shots of wanted criminals. The 17% of those published are arrested through information provided to the police. If 200 are published, find the probability that less than 30 are arrested.
At the .01 significance level, is there a relationship between job pressure and age?
Stats Questions Set. Which of the following statements correctly compares the t -statistic to the z -score when creating a confidence interval?
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