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Author Archives: Anonymous

Data for outcome Y and single predictor X was collected on 2…

Data for outcome Y and single predictor X was collected on 25 observations. We’re given the following R output from a simple linear regression model modeling outcome Y and predictor X: > reg = lm(y ~ x) > summary(reg) Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) 0.8542 1.5503 -0.551 0.586939 x 0.9121 0.2190 4.165 0.000373 *** — Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 Residual standard error: 3.058 on 23 degrees of freedom   We also know that . Use the regression equation to predict Y when X is each of the following:      

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A simple linear regression model is made for a single outcom…

A simple linear regression model is made for a single outcome (Y) and one predictor (X). The following R output is given from the confint() function for two different levels (0.95 and 0.99). > confint(reg, level = 0.95) 2.5 % 97.5 % (Intercept) -5.1886218 3.209482 x 0.1463107 1.631980 > confint(reg, level = 0.99) 0.5 % 99.5 % (Intercept) -6.6880231 4.708884 x -0.1189414 1.897232   A hypothesis test is conducted to test versus . Which of the following is true regarding the value of the p-value from this test?

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A researcher is investigating the presence of metabolic dise…

A researcher is investigating the presence of metabolic disease in patients who take a particular supplement. A sample of 169 individuals was observed and the presence of diabetes, hyperthyroidism, both, or neither were recorded along with whether or not they take a specific supplement daily, weekly, or not at all. The counts of each category are shown below. Supplement Daily Supplement Weekly No Supplement Diabetes Only 15 14 23 Hyperthyroidism Only 17 12 19 Both 8 14 7 Neither 7 9 24 A hypothesis was constructed to test the independence of presence of disease on supplementation. What distribution would be used to find the critical value? Distribution: Degrees of Freedom:

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The 1st Amendment ensures your right to 

The 1st Amendment ensures your right to 

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Police procedures are shaped by:

Police procedures are shaped by:

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All suspects arrested for a crime go to jail.

All suspects arrested for a crime go to jail.

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The Exclusionary Rule makes evidence that was improperly obt…

The Exclusionary Rule makes evidence that was improperly obtained inadmissible.

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Which court has the power to set nationwide police practices…

Which court has the power to set nationwide police practices with its rulings.

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Which court case set the standard for review of use of force…

Which court case set the standard for review of use of force cases 

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A client has ill-fitting dentures but denies any problems wi…

A client has ill-fitting dentures but denies any problems with eating foods. What type of diet selection would the nurse anticipate that the health-care provider will order?

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