A travel association claims that the mean daily meal cost...

A travel association claims that the mean daily meal cost for two adults traveling together on vacation in San Francisco is $115. A random sample of 30 such couples has a mean daily meal cost of $110 and a standard deviation of $9.50. Let $\alpha = .05$ Calculate the appropriate test statistic (i.e., step 2 in hypothesis testing).

Transcript

00:01 Once again, welcome to a new problem.

00:04 This time, we're dealing with inferential statistics.

00:09 We're dealing with inferential statistics.

00:12 And when it comes to inferential statistics, we have two branches.

00:17 We have hypotheses testing.

00:22 And of course, we also have confidence interval.

00:28 So we have both hypothesis testing.

00:31 And we have confidence interval hypothesis testing.

00:35 We have hypothesis testing for proportions, and we have hypothesis testing for means.

00:41 And under means, we have two samples, two samples t test, and this can be dependent, or it could also be independent.

01:00 And then we have a one -sumptial.

01:02 One sample t test and in the one sample t test we can compute the test statistic using this formula.

01:18 So we have a new problem and in this particular problem we're thinking about a travel association and the association is making claims on food cost for two adults traveling together.

01:46 And so this is in general on vacation to san francisco, a meal is $110.

01:58 So we have a sample and the sample, remember, is randomized.

02:03 Randomized, so we have randomized sample involving 14 groups of adults and we're conducting a hypothesis with the claim that the mean daily food is greater than $110.

02:35 And of course we're using the mean and the standard deviation...

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