An Internet service provider is interested in testing to see if there is a difference in the mean weekly connect time for users who come into the service through a dial-up line, DSL, or cable Internet. To test this, the ISP has selected random samples from each category of user and recorded the connect time during a week period. The following data were collected: 
Assuming that the test is to be conducted at a 0.01 level of significance, what would the critical value be for this test?
Definitions:
Substitute Goods
Products or services that can be used in place of one another, satisfying similar needs or desires.
Complementary Goods
are products or services that are used together, where the use or consumption of one increases the demand for the other.
Close-Substitute
A good or service that can easily replace another in satisfying consumer needs, with very little change in consumption patterns.
Consumer Preferences
The tastes, preferences, and priorities that individuals have regarding the consumption of goods and services.
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