**Question**

If a hypothesis test were to be performed, in which of the following contexts would a t-test be appropriate?

**Question**

For which of the following is a t-test appropriate for performing a hypothesis test?

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**Question**

If a hypothesis test were to be performed, in which of the following contexts would a t-test be appropriate?

**Question**

According to a survey, the average American person watches TV for 3 hours per week. To test if the amount of TV in New York City is less than the national average, a researcher decides to do a hypothesis test, at a 10% significance level. She surveys 26 New Yorkers randomly and asks them about their amount of TV each week, on average. From the data, the sample mean time is 2.5 hours per week, and the sample standard deviation (s) is 1.1 hours.

- H0: μ≥3; Ha: μ<3.
- α=0.1(significance level)

What is the test statistic (t-value) of this one-mean hypothesis test (with σ unknown)?

- Round your final answer to two decimal places.

**Solution:**

**Question**

If a hypothesis test were to be performed, in which of the following contexts would a t-test be appropriate?

### Correct answer:

A sample mean of 30 pounds and a sample standard deviation of 5 pounds are obtained using a simple random sample of 27 dogs from the dogs within a county, which have approximately normally distributed weights…..**Click link below to purchase full tutorial at $5**