A rocket motor is manufactured by bonding together two types of propellants, an igniter and a sustainer. The shear strength of the bond (y) is thought to be a linear function of the age of the propellant (x) when the motor is cast. Twenty observations are shown in the following table.Observation numberStrength y (psi)Age x (weeks)12158.715.521678.1523.7532316842061.31752207.5561708.31971784.724825752.592357.97.5102277.711112165.213122399.553.75131779.825142336.759.75151765.322162053.518172414.46182200.512.5192654.22201753.721.5 Round your answers to 2 decimal places.Find a 90.0% confidence interval on each of the following:(a) Po--15.27-15.27(b) B1-1.30130(c) Mean shear strength when agex- 14.25 weeks.I i 3.19i| 3.19(d) Find a 90.0% prediction interval on shear strength when age x- 14.25 weeks.3.193.19

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A rocket motor is manufactured by bonding together two types of propellants, an igniter and a sustainer. The shear strength of the bond (y) is thought to be a linear function of the age of the propellant (x) when the motor is cast. Twenty observations are shown in the following table.

Observation number	Strength y (psi)	Age x (weeks)
1	2158.7	15.5
2	1678.15	23.75
3	2316	8
4	2061.3	17
5	2207.5	5
6	1708.3	19
7	1784.7	24
8	2575	2.5
9	2357.9	7.5
10	2277.7	11
11	2165.2	13
12	2399.55	3.75
13	1779.8	25
14	2336.75	9.75
15	1765.3	22
16	2053.5	18
17	2414.4	6
18	2200.5	12.5
19	2654.2	2
20	1753.7	21.5