Exhibit 9-5 n = 16 HỌ: µ z 80 x = 75.607 Hạ: u < 80 o = 8.246 Assume the population is normally distributed. 3. Refer to Exhibit 9-5. The test statistic equals O.53 O-2.131 O-.53 2.131
Exhibit 9-5 n = 16 HỌ: µ z 80 x = 75.607 Hạ: u < 80 o = 8.246 Assume the population is normally distributed. 3. Refer to Exhibit 9-5. The test statistic equals O.53 O-2.131 O-.53 2.131
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:**Exhibit 9-5:**
- Sample size (\( n \)): 16
- Sample mean (\( \bar{x} \)): 75.607
- Population standard deviation (\( \sigma \)): 8.246
**Hypotheses:**
- Null hypothesis (\( H_0 \)): \( \mu \geq 80 \)
- Alternative hypothesis (\( H_a \)): \( \mu < 80 \)
Assume the population is normally distributed.
**Question 3:**
Refer to Exhibit 9-5. The test statistic equals ____.
- \( \circ \) .53
- \( \circ \) -2.131
- \( \circ \) -.53
- \( \circ \) 2.131
(Note: Calculating the correct test statistic involves using the formula for a z-test: \( z = \frac{\bar{x} - \mu}{\sigma/\sqrt{n}} \). Plug in the values to find the correct answer from the options.)
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