Answer 1. To the nearest whole number, the best predicted diastolic pressure for

Question

Answer

1.  To the nearest whole number, the best predicted diastolic pressure for a person with a systolic reading of 113 is 76.
2.  P-value = 7.16
3.  There is NOT correlation between Systolic and Diastolic blood pressure in the table shown above at a significance level of 0.05.
.
4.  The regression line equation is y = - 3.51+ 0.71x
5.  To the nearest whole number, the best predicted diastolic pressure for a person with a systolic reading of 134 is 92

systolic (x) 136 132 142 119 125 122 129 129 126 145 141 139 diasolic (y) 92 93 99 83 90 81 81 85 84 96 104 92

Explanation / Answer

The statistical software output for regression is:

Simple linear regression results:
Dependent Variable: var4
Independent Variable: var3
var4 = -6.5132903 + 0.73069999 var3
Sample size: 12
R (correlation coefficient) = 0.83542069
R-sq = 0.69792773
Estimate of error standard deviation: 4.2643582

Parameter estimates:

Analysis of variance table for regression model:

Hence,

Only Option 1 is correct.

Parameter Estimate Std. Err. Alternative DF T-Stat P-value Intercept -6.5132903 20.116481 0 10 -0.32377881 0.7528 Slope 0.73069999 0.152016 0 10 4.8067308 0.0007

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