An Internet Service Provider Is Interested in Testing to See

question 160

Multiple Choice

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: Based upon these data and a significance level of 0.05,which of the following statements is true?

• A)The F-critical value for the test is 3.555
• B)The test statistic is approximately 43.9
• C)The null hypothesis should be rejected and conclude that the mean connect times for the three user categories are not all equal.
• D)All of the above are true.

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Definitions:

Survivorship Bias

The logical error of concentrating on the people or things that "survived" some process and inadvertently overlooking those that did not because of their lack of visibility.

Investment Decisions

The process of deciding where to allocate resources in order to achieve the highest possible return.

Poor Performing Funds

Funds that consistently generate returns below their benchmark or peer group averages over a specified period.

Category

A classification or grouping based on common characteristics or types, used to organize items or concepts for easier analysis and comparison.