Test Hypotheses about a Population Mean with Unknown
-Find the standardized test statistic t for a sample with n = 10, x = 8.8, s = 1.3, and = 0.05 if H0: 9.7. Round your answer to three decimal places.
A) $- 2.189$
B) $- 3.186$
C) $- 3.010$
D) $- 2.617$

Question

Test Hypotheses about a Population Mean with Unknown
-Find the standardized test statistic t for a sample with n = 10, x = 8.8, s = 1.3, and = 0.05 if H0: 9.7. Round your answer to three decimal places. 
A) $- 2.189$
B) $- 3.186$
C) $- 3.010$
D) $- 2.617$

Quizplus · Accepted Answer

The standardized test statistic $t$ is calculated using the formula $t = \frac{\bar{x} - \mu}{(s/\sqrt{n})}$, where $\bar{x}$ is the sample mean, $\mu$ is the population mean under the null hypothesis, $s$ is the sample standard deviation, and $n$ is the sample size. Plugging in the given values: $t = \frac{8.8 - 9.7}{(1.3/\sqrt{10})} = -2.189$, rounded to three decimal places.

Test Hypotheses About a Population Mean with Unknown -Find the Standardized

Test Hypotheses About a Population Mean with Unknown
-Find the Standardized