Question: A company making plastic optical components was studying inconsistencies in an optical measurement called tilt. 2 different types of pins used in the mold produced the following results:
|
|
Taper Locks
|
Locking Pins
|
|
X bar
|
1.262
|
0.561
|
|
S
|
0.297
|
0.307
|
|
n
|
20
|
20
|
[A] Repeat a. that the population variances are not equal.
[B] Compare the results of a & b
[C] Suppose the population variances are equal & the population is normally distributed, at the 0.5 level of significance, is the evidence of a difference in the means between taper locks & locking pins.