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In: Statistics and Probability

The effect of sealer plate temperature (X1) and sealer plate clearance (X2) in a soap wrapping...

The effect of sealer plate temperature (X1) and sealer plate clearance (X2) in a soap wrapping machine affects the percentage of wrapped bars (Y) which pass inspection. Use the appropriate test to determine whether X1 can be dropped from the regression model given that X2 is retained. Use level of significance 0.05. Find the value of appropriate test statistic, the critical vale and the P-value. choose the one correct answer from the four options below.

  1. 0.1537; 4.6679; 0.7014
  2. 0.1537; 4.3245; 0.6523
  3. 1.537; 4.6932; 0.4128
  4. 2.5632; 4.6679; 0.3128

X1   X2   Y
190   130   35
176   174   81.7
205   134   42.5
210   191   98.3
230   165   52.7
192   194   82
220   143   34.5
235   186   95.4
240   139   56.7
230   188   84.4
200   175   94.3
218   156   44.3
220   190   83.3
210   178   91.4
208   132   43.5
225   148   51.7

Solutions

Expert Solution

here we have p value = 0.7017

and f critical = 4.6

therefore option A

orchestra answered 2 years ago
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