Question 1186795
Here's how to calculate the test statistic t:

1. **Identify the given values:**

*   n (sample size) = 23
*   x̄ (sample mean) = 226,450 miles
*   s (sample standard deviation) = 11,500 miles
*   μ (population mean under the null hypothesis) = 220,000 miles

2. **Use the formula for the t-statistic:**

t = (x̄ - μ) / (s / √n)

3. **Plug in the values:**

t = (226,450 - 220,000) / (11,500 / √23)
t = 6,450 / (11,500 / 4.7958)
t = 6,450 / 2400.05
t ≈ 2.687

Rounding to two decimal places, the test statistic *t* is approximately 2.69.