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Assume that widgets are produced with a normal distribution.
You have two machines that produce widgets for your company.
The machines that produce widgets assume they different standard deviation.
It is believed that wdigets from machine 1 have a mean greater than that of wdigets from machine 2
Don't assume the variances are equal. Assume they are unequal.
Sample wdigets from machine 1 (data points separated by commas):
53.02 , 50.69 , 51.31 , 53.46 ,
55.44 , 51.23 , 51.43 , 54.05
Sample wdigets from machine 2 (data points separated by commas):
52.24 , 49.77 , 48.61 , 50.87 ,
47.32 , 48.8 , 50.9 , 47.76 ,
47.82 , 45.69 , 49.03 , 48.29 ,
46.96 , 49.69 , 55.04 , 52.91 ,
52.99 , 46.75
Test your hypothesis at the 0.05 level.
Download the required data here.
Enter your answer below (4 decimal places).
P-value:
Select Answer:
Fail to Reject Null Hypothesis
Reject Null Hypothesis
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