Question 1 Predict the shear strength in psi the age k 17 weeks. Round off your answer to the nearest tenth.

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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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: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.
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
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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