Arocket motor is marufactured by bonding together two types ef propelants. an igniter and a sustainer. The stear strength of the bond is thoughtts bealnerturetion of the agef the propellant when the motor is cast. Twenty observations are shown in the folowing table Observation Strength Age Iweeks) Observation Strength Age Number Number Iweeial 2585 45 I 11 22105 175 23679 133 I 12 20042 75 125 I 13 1789 2 2326 2287.7. 18 I 14 17637 25 22175 115 I 15 17753 27 2188.7 20 I 16 21752 23 I 17 20713 234575 15 244 I 21 213 I 24a los 1747 19 10 204 I 78 20
Arocket motor is marufactured by bonding together two types ef propelants. an igniter and a sustainer. The stear strength of the bond is thoughtts bealnerturetion of the agef the propellant when the motor is cast. Twenty observations are shown in the folowing table Observation Strength Age Iweeks) Observation Strength Age Number Number Iweeial 2585 45 I 11 22105 175 23679 133 I 12 20042 75 125 I 13 1789 2 2326 2287.7. 18 I 14 17637 25 22175 115 I 15 17753 27 2188.7 20 I 16 21752 23 I 17 20713 234575 15 244 I 21 213 I 24a los 1747 19 10 204 I 78 20
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.7: More On Inequalities
Problem 44E
Related questions
Question
answer 2 only
Transcribed Image Text:Question 1
Predict the shear strength in psi f the age is 17 weeks. Round off your answer to the nearest tenth.
Question 2
Predict the shear strength in psi if the age is 14 days. Round off your answer to the nearest integer.
Question 3
Fit a straight line by the method of least squares. Calculate the slope. Report your answer to one decimal place.
Transcribed Image Text:Arocket motor is marufactured by bonding together two types of propelants. an igniter and a sustainer. The shear strength of the bond is thought to be a linear function of the age of
the propellant when the motor is cast. Twenty observations are shown in the following table.
Observation Strength.
(ps) (weeks)
Age .Observation Strength
Age
(psi) I (weeks)
Number
Number
1
2585 6.5 I
11
22105
175
2
2367.9
13.3 I
12
26642
75
3
2326
125 I 13
17898
28
2287.7. 18 I 14
17637
25
115 1 15
22175
17753
27
6.
2168.7
20.8 I
16
21752
194
20713 23 I 17
2345.75
15
244 I 18
18183
20635
24
293 I 19
24244 los
17947
1688 15 304
240955
10
20
78
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