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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.
question 1 a is a gradual long-term up-or-down movement of demand.answer seasonal pattern cycle trend
Unions often oppose imports from what they call low-wage countries and advocate trade barriers to protect jobs from what they often characterise as "unfair" import competition" please critically analise this statement
Our judicial system operates under a similar principle
question 1 one subway station in toronto has 6 turnstiles each of which can be controlled by the station manager to be
4x5 contingency table was developed and computed to 15.42. At the 0.05% level, the critical value is21.026
Compute the mean median, and mode
What is the dependent variable and what is the categorical variable - What does this mean in terms of the alternative hypothesis?
11) The time taken to assemble a car in a certain plant is a random variable having a normaldistribution of 20 hours and a standard deviation of 2 hours. What is the probability that a car canbe assembled at this plant in a period of time:a. l..
We need to acquire a piece of equipment. However, we are uncertain about its reliability. It might need a low, medium or a high number of repairs during its life. The present value ("PV") of the costs of the equipment over its life would be as follow..
What are the possible values of this random variable and draw the density function.
Determine the statistics for each gender as follows: Frequency, Counts, Mean, standard deviation, minimum, and Maximum. Graphing and Descriptive Stats in SPSS: Create a bar graph with gender (axis X) and height (axis Y).
Rob rales is preparing a report that his employer will eventually deliver to the FFA. First, the report must be approved by both of his two supervisors. Each of these supervisors acts independently in the review of these reports. Supervisor A ..
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