MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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**What is the test statistic?** - \( \circ \ t = \frac{(\bar{x}_1 - \bar{x}_2) - (\mu_1 - \mu_2)}{\sqrt{\frac{s_1^2}{n_1} + \frac{s_2^2}{n_2}}} \) - \( \circ \ z = \frac{(\bar{x}_1 - \bar{x}_2) - (\mu_1 - \mu_2)}{\sqrt{\frac{\sigma_1^2}{n_1} + \frac{\sigma_2^2}{n_2}}} \) - \( \circ \ \chi^2 = \frac{(n - 1)^2 \cdot s^2}{\sigma^2} \) - \( \circ \ z = \frac{\bar{x} - \mu}{\sigma / \sqrt{n}} \) - \( \circ \ t = \frac{(\bar{x}_1 - \bar{x}_2) - (\mu_1 - \mu_2)}{\sqrt{\frac{sp^2}{n_1} + \frac{sp^2}{n_2}}} \) - \( \circ \ t = \frac{\bar{x} - \mu}{s / \sqrt{n}} \) - \( \circ \ z = \frac{(\hat{p}_1 - \hat{p}_2) - (p_1 - p_2)}{\sqrt{\frac{\hat{p} \cdot \hat{q}}{n_1} + \frac{\hat{p} \cdot \hat{q}}{n_2}}} \) - \( \circ \ t_d = \frac{\bar{x} - \mu_d}{s_d / \sqrt{n}} \) - \( \circ \ F = \frac{s_1^2}{s_2^2} \) - \( \circ \ z = \frac{\hat{p} - p}{\sqrt{\frac{p \cdot q}{n}}} \)
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Transcribed Image Text:**What is the test statistic?** - \( \circ \ t = \frac{(\bar{x}_1 - \bar{x}_2) - (\mu_1 - \mu_2)}{\sqrt{\frac{s_1^2}{n_1} + \frac{s_2^2}{n_2}}} \) - \( \circ \ z = \frac{(\bar{x}_1 - \bar{x}_2) - (\mu_1 - \mu_2)}{\sqrt{\frac{\sigma_1^2}{n_1} + \frac{\sigma_2^2}{n_2}}} \) - \( \circ \ \chi^2 = \frac{(n - 1)^2 \cdot s^2}{\sigma^2} \) - \( \circ \ z = \frac{\bar{x} - \mu}{\sigma / \sqrt{n}} \) - \( \circ \ t = \frac{(\bar{x}_1 - \bar{x}_2) - (\mu_1 - \mu_2)}{\sqrt{\frac{sp^2}{n_1} + \frac{sp^2}{n_2}}} \) - \( \circ \ t = \frac{\bar{x} - \mu}{s / \sqrt{n}} \) - \( \circ \ z = \frac{(\hat{p}_1 - \hat{p}_2) - (p_1 - p_2)}{\sqrt{\frac{\hat{p} \cdot \hat{q}}{n_1} + \frac{\hat{p} \cdot \hat{q}}{n_2}}} \) - \( \circ \ t_d = \frac{\bar{x} - \mu_d}{s_d / \sqrt{n}} \) - \( \circ \ F = \frac{s_1^2}{s_2^2} \) - \( \circ \ z = \frac{\hat{p} - p}{\sqrt{\frac{p \cdot q}{n}}} \)
A public bus company official claims that the mean waiting time for bus number 14 during peak hours is less than 10 minutes. Karen took bus number 14 during peak hours on 18 different occasions. Her mean waiting time was 7.6 minutes with a standard deviation of 2.3 minutes. Assume the population standard deviation is not known. **How many populations?** - ○ 2 - ○ 1 **What is the parameter?** - ○ Proportion - ○ Variance - ○ Mean - ○ Difference between Means - ○ Standard Deviation
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Transcribed Image Text:A public bus company official claims that the mean waiting time for bus number 14 during peak hours is less than 10 minutes. Karen took bus number 14 during peak hours on 18 different occasions. Her mean waiting time was 7.6 minutes with a standard deviation of 2.3 minutes. Assume the population standard deviation is not known. **How many populations?** - ○ 2 - ○ 1 **What is the parameter?** - ○ Proportion - ○ Variance - ○ Mean - ○ Difference between Means - ○ Standard Deviation
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