A mechanical engineer is studying bonding issues with the thermal protection til

Question

A mechanical engineer is studying bonding issues with the thermal protection tiles on the Space Shuttle. He wants to see whether there is any difference in the bonding strength between three different compounds. Fifteen tiles are randomly assigned to the three compounds so that each compound is tested on five tiles. Each tile is coated with its assigned compound and bonded to a surface. After a period of time, pull-tests are performed to determine the amount of force needed to break the bond.

Question 12 options:

A)

B)

C)

D)

E)

A)

H0: ?1 = ?2 = ?3 vs. the alternative that not all compound means are equal

B)

H0: ?1 = ?2 = ?3 = ?4 = ?5 vs. the alternative that not all tile means are equal

C)

H0: ?1 ? ?2 ? ?3 vs. the alternative that all compound means are equal

D)

H0: ?1 ? ?2 ? ?3 ? ?4 ? ?5 vs. the alternative that all five tile means are equal

E)

H0: ?1 = ?2 = ?3 vs. the alternative that not all tile means are equal

Explanation / Answer

Here we are testing the bonding strength of three different compounds so

correct option is

A) H0: ?1 = ?2 = ?3 vs. the alternative that not all compound means are equal.

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