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9. An article in the Journal of Sound and Vibration (Vol. 151, 1991, pp. 383-394) described a study investigating the relationship between noise exposure and hypertension. The following data are representative of those reported in the article. y 1 0 1 2 5 1 4 6 2 3 x 60 63 65 70 70 70 80 90 80 80 y 5 4 6 8 4 5 7 9 7 6 x 85 89 90 90 90 90 94 100 100 100 (a) Draw a scatter diagram of y (blood pressure rise in millimeters of mercury) versus x (sound pressure level in decibels). Does a simple linear regression model seem reasonable in this situation? (b) Fit the simple linear regression model using least squares. Find an estimate of 2. (c) Find the predicted mean rise in blood pressure level associated with a sound pressure level of 85 decibals. (d) Test for the slope of the regression line. (e) Find Coefficient of correlation.
What is the new project completion time and what is the new total project cost - Identify what are the time and the path of this minimum cost schedule.
You are proposed to accept or reject a lottery which gives X with probability 1/3 and -1 with probability 2/3. Before accepting you receive a signal "g" (good) or "b" (bad). The signal has precision q=P(g|win)=P(b|lose)>1/2.
Can telling yourself during exercise that youre not as tired as you think you are help you work out longer and achieve more benefit from your exercise? Researchers from the University of Kent in Canterbury, England published results in the Jour..
Three machines continuously process an unending number of jobs. The time it takes to process a job on machine A is a Uniform [0,4] random variable, the time it takes to process a job on machine B is Uniform [1,3] random variable, and the time it take..
Describe the population of interest for the survey
Given the following, complete the ANOVA table and make the correct inference.
Determine the posterior probabilities, given the following prior and likelihood probabilities.Prior probabilities P(s1) = .25 P(s2) = .40 P(s3) = .35 Likelihood Probabilities
Beanie Babies are toy stuffed animals that have become valuable collector's items. Beanie World Magazine provided the information on 50 Beanie Babies given in beanie.xls.
the following data summarize the results from an independent-measures study comparing three treatment
Are they weak or strong correlations - what is the significance value and what does the significance value reveal about the data we have used?
Find the marginal density of D2
Descriptives of a continuous variable: mean, median, skewness, kurtosis, standard deviation and graph of that variable Cross tabulation of two variables
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