48
(Choose 1 answer)
(See picture)
B. The mean strength increases 4.719.units
C. The mean strength decreases 1.441 units
D. The mean strength decreases 2.882 units
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. Table below provides 6 observations:
A. The mean strength increases 1.441 units
X
15
23
38
8
17
5
19
Y
25
15
26
11
30
What change in mean STRENGTH is expected when the AGE increases by 1 unit? Round to 3 decimal places.
