Statistics

The Tribune claims that the time of travel from downtown to the University via the bus has an average of µ = 27 minutes. A student who normally takes this bus believes that µ is greater than 27 minutes. A sample of six ride times taken to test the hypothesis of interest gave a mean of 27.5 minutes and standard deviation of 2.43 minutes. The value of the test statistic for testing this hypothesis is


- 0.532

0.460

0.504

-0.460

-0.504

--------

Which of the following conditions doesn't need to be met before you can use a two-sample procedure?


The responses in each group are independent of each other.

Each group is considered to be a sample from a distinct population.

The same variable is measured in both samples.

The goal is to compare the means of the two groups.

Data in two samples are matched together in pairs that are compared.

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  1. To find the test statistic:

    (x - mean)/(sd/√n)

    With your data:

    (27.5 - 27)/(2.43/√6) = ?

    I'll let you finish the calculation.

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  2. .504010235141

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