What is the definition of level of significance? Use the terms alpha level, level of significance, rejection region, andprobability of a Type 1 error in the definition through a single sentence ONLY.

The level of significance is denoted by alpha, that is the probability of Type 1 error which is the…

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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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What recommendations did the APA task force make about reporting What recommendations did the APA task force make about reporting statistical results (are significance tests alone sufficient?) What recommendations did the APA task force make about reporting
40 people are randomly sent to walk one of four trails. The time (in minutes) they spend completing each trail is recorded in the table below. (a) Test to see if the times needed to complete a trail vary. Use a 0.05 significance level. (b) Test each pair (A/B, A/C, A/D, B/C, B/D, C/D) to see which trails have a statistically significant difference. Indicate your p-value for each comparison, and when the effect is statistically significant (use 0.05 as your significance level), declare which trail of the two takes more time to complete. Trail A - 30, 33, 41, 27, 36, 31, 37, 40, 29, 35 Trail B - 27, 33, 38, 41, 40, 38, 35, 44, 41, 39 Trail C - 25, 34, 41, 39, 32, 30, 36, 35, 27, 33 Trail D - 41, 39, 46, 37, 40, 42, 50, 42, 50, 33, 47, 43
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The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each case, it was known if the subjected lied or did not lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim that whether a subject lies is independent of the polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truth and lies? E Click the icon to view the table. Determine the null and alternative hypotheses. O A. Ho: Whether a subject lies is independent of the polygraph test indication. H1: Whether a subject lies is not independent of the polygraph test indication. O B. Ho: Polygraph testing is not accurate. H1: Polygraph testing is accurate. O C. Ho: Polygraph testing is accurate. H1: Polygraph testing is not accurate. O D. Ho: Whether a subject lies is not independent of the polygraph test indication. H1: Whether a subject lies is independent of the polygraph test…
The table to the right contains observed values and expected values in parentheses for two categorical variables, X and Y, where variable X has three categories and variable Y has two categories. Use the table to complete parts (a) and (b) below. EQuestion Help X, X2 32 44 51 (35.39)(44.42)(47.19 19 20 17 (15.61)(19.58)(20.81) O B. H,: The Y category and X category have equal proportions. H,: The proportions are not equal. OC. Hn: The Y category andX category are dependent. H,: The Y category and X category are independent. OD. Ho: H -E, and Hy =E, H: H #E, or H, 7E, What is the P-value? P-value = (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer. port
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Based on what we know about infants' use of statistical learning, what might explain individual differences in the number of words children understand by 1 year of age? (Remember, the median number of words known is 70, with the 10th percentile knowing 25 words and the 90th percentile knowing >200 words). Answers: Individual differences in reinforcement for listening to speech. Individual differences in number of words heard. Individual differences in categorical perception.
The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each case, it was known if the subjected lied or did not lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim that whether a subject lies is independent of the polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truth and lies? LOADING... Click the icon to view the table. Determine the null and alternative hypotheses. A. H0: Polygraph testing is accurate. H1: Polygraph testing is not accurate. B. H0: Polygraph testing is not accurate. H1: Polygraph testing is accurate. C. H0: Whether a subject lies is independent of the polygraph test indication. H1: Whether a subject lies is not independent of the polygraph test indication. Your answer is correct. D. H0: Whether a subject lies is not independent of the polygraph…
Using 1% for the significance level, find the conclusion of this hypothesis testing in words using the p-value approach. Follow the questions below. 1) State the p-value and interpret the p-value in words. 2) Using the significance level and the p-value, state the conclusion of this hypothesis testing.
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What is the definition of level of significance? Use the terms alpha level, level of significance, rejection region, and probability of a Type 1 error in the definition through a single sentence ONLY.