Question

Listed below are systolic blood pressure measurements (in mm Hg) obtained from the same woman. a) Find the regression equation, letting the right arm blood pressure be the predictor (x) variable. b) Find the best predicted systolic blood pressure in the left arm given that the systolic blood pressure in the right arm is 90 mm Hg. Right Arm 101 100 94 79 80 Left Arm 175 169 144 145 143 a) The regression equation is ModifyingAbove y with caret equalsnothingplusnothing x. (Round to one decimal place as needed.) b) Given that the systolic blood pressure in the right arm is 90 mm Hg, the best predicted systolic blood pressure in the left arm is nothing mm Hg.

Answer #1

X |
Y |
XY |
X² |
Y² |

101 | 175 | 17675 | 10201 | 30625 |

100 | 169 | 16900 | 10000 | 28561 |

94 | 144 | 13536 | 8836 | 20736 |

79 | 145 | 11455 | 6241 | 21025 |

80 | 143 | 11440 | 6400 | 20449 |

Ʃx = | 454 |

Ʃy = | 776 |

Ʃxy = | 71006 |

Ʃx² = | 41678 |

Ʃy² = | 121396 |

Sample size, n = | 5 |

x̅ = Ʃx/n = 454/5 = | 90.8 |

y̅ = Ʃy/n = 776/5 = | 155.2 |

SSxx = Ʃx² - (Ʃx)²/n = 41678 - (454)²/5 = | 454.8 |

SSyy = Ʃy² - (Ʃy)²/n = 121396 - (776)²/5 = | 960.8 |

SSxy = Ʃxy - (Ʃx)(Ʃy)/n = 71006 - (454)(776)/5 = | 545.2 |

Slope, b = SSxy/SSxx = 545.2/454.8 = 1.1987687

y-intercept, a = y̅ -b* x̅ = 155.2 - (1.19877)*90.8 = 46.351803

a) Regression equation :

**ŷ = 46.4 + (1.2) x**

b) Predicted value of y at x = 90

ŷ = 46.3518 + (1.1988) * 90 = **154.2**

Listed below are systolic blood pressure measurements (in mm
Hg) obtained from the same woman. Find the regression equation,
letting the right arm blood pressure be the predictor (x)
variable. Find the best predicted systolic blood pressure in the
left arm given that the systolic blood pressure in the right arm is
100 mm Hg. Use a significance level of 0.05. Right Arm 102 101 94
79 79 Left Arm 175 170 145 146 144

Listed below are systolic blood pressure measurements (in mm Hg)
obtained from the same woman. Find the regression equation, letting
the right arm blood pressure be the predictor (x) variable. Find
the best predicted systolic blood pressure in the left arm given
that the systolic blood pressure in the right arm is
90
mm Hg. Use a significance level of
0.05
Right Ar
103
102
95
80
81
Left Arm
176
169
145
145
147
The regression equation is y...

Listed below are systolic blood pressure measurements (in mm
Hg) obtained from the same woman. Find the regression equation,
letting the right arm blood pressure be the predictor (x)
variable. Find the best predicted systolic blood pressure in the
left arm given that the systolic blood pressure in the right arm is
85 mm Hg. Use a significance level of 0.05. Right Arm 101 100 92 77
76 Left Arm 174 168 142 141 143 LOADING... Click the icon to...

Listed below are
systolic blood pressure measurements (in mm Hg) obtained from the
same woman. Find the regression equation, letting the right arm
blood pressure be the predictor (x) variable. Find the best
predicted systolic blood pressure in the left arm given that the
systolic blood pressure in the right arm is 80 mm Hg. Use a
significance level of 0.05.
Right Arm
103 102 94 75 74
Left Arm 177 170 146 143 144...

Using statcrunch only, please!!
Listed below are systolic blood pressure measurements (in mm
Hg) obtained from the same woman. Find the regression equation,
letting the right arm blood pressure be the predictor (x)
variable. Find the best predicted systolic blood pressure in the
left arm given that the systolic blood pressure in the right arm is
80 mm Hg. Use a significance level of 0.05.
Right Arm
left Arm
101
176
100
169
93
148
76
145
76
147

Listed below are systolic blood pressure measurements (in mm
Hg) obtained from the same woman. Find the regression equation,
letting the right arm blood pressure be the predictor (x)
variable. Find the best predicted systolic blood pressure in the
left arm given that the systolic blood pressure in the right arm is
85 mm Hg. Use a significance level of 0.05.
Right Arm
103
102
95
75
74
Left Arm
174
167
151
148
148
The regression equation is y=92.8p+0.7x....

Find the best predicted systolic blood pressure in the left arm
given that the systolic blood pressure in the right arm is 100 mm
Hg (using Regression line).
Right Arm
102
101
94
79
79
Left Arm
175
169 182
146 144

Find the best predicted systolic blood pressure in the left arm
given that the systolic blood pressure in the right arm is 100 mm
HG.
Right Arm
102
101
94
79
79
Left Arm
175
169
182
146
144

a-Find the best predicted systolic blood pressure in the left
arm given that the systolic blood pressure in the right arm is 100
mm Hg (using Regression line).
Right Arm
102
101
94
79
79
Left Arm
175
169 182
146 144
b-Find the Linear correlation coefficient between the blood
pressure in right arm (x) and the blood pressure in left
arm (y) using the data given in part a

Find the best predicted systolic blood pressure in the left arm
given that the systolic blood pressure in the right arm is 100 mm
Hg.
Right Arm
102
101
94
79
79
Left Arm
175
169
182
146
144
a) State the least square equation.
b) Is the model adequate? Explain. What test
determines this?

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