Question

11.2 Section Question 9 of 10 ( point) Attempt 1 of Unlimited View question in a popup Blood pressure: A blood pressure measurement consists of two numbers: the systolic pressure, which is the maximum pressure taken when the heart is contracting, and the diastolic pressure, which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were measured, in millimeters, for a sample of 10 adults. The following table presents the results. Diastolic Diastolic Systolic 118 Systolic 107 130 76 110 69 Based on results published in the Journal of Human Hypertension Send data Skip Part Check Answer Save For Later Submit Assignmer 2019 McGraw Hill Education. All Rights Reserved. Terms of Use Privas

need help with homework and please explain on rounding the slope to four decimal places . thank you

Answer 1

Step 1: Find X Y and XP as it was done in the table below. Χ. Χ 118 130 Χ.Υ 10384 9880 8120 12103 8400 7597 8140 13924 16900 13456 17689 116 133 112 12544 107 11449 110 12100 108 7452 11664 105 6930 11025 157 16171 24649 Step 2: Find the sum of every column: ΣΧ = 1196, ΣΥ = 783, ΣΧΥ = 95177, ΣΧ? = 145400 Step 3: Use the following equations to find a and b: - ΟΙ 0.7 ΣΥΣΧ? - ΣΧΣΧΥ 783 - 145400 – 1196 - 95177 - η·ΣΧ? - (ΣΧ)? 10. 145400 – 11962 Η η·ΣΧΥ – ΣΧ.ΣΥ 10 - 95177 – 1196 - 783 , η-ΣΧ- (ΣΧ)? 10. 145400 – (1196)? 6 = – - 0.649 Step 4: Substitute a and b in regression equation formula 9 = = α + 0.7 6.1 + 0.649.