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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Researchers conducted trials to investigate the effects of color on creativity. Subjects with a red background were asked to think of creative uses for a brick; other subjects with a blue background were given the same task. Responses were scored by a panel of judges and results from scores of creativity are given in the accompanying table. Higher scores correspond to more creativity. The researchers make the claim that "blue enhances performance on a creative task." Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b). Click the icon to view the summary statistics. a. Use a 0.05 significance level to test the claim that blue enhances performance on a creative task. What are the null and alternative hypotheses? OA. Ho: H₁ H₂ H₁: Hy <H₂ OC. Ho: H₁ H₂ H₁ H₁ H₂ B. Ho: H₁ H2 H₁ H₁ H₂ D. Ho: H₁ H2 H₁: H₁ H₂ The test statistic, t, is 3.73. (Round to two decimal places as needed.) The P-value is 0. (Round to three decimal places as needed.) State the conclusion for the test.
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Transcribed Image Text:Researchers conducted trials to investigate the effects of color on creativity. Subjects with a red background were asked to think of creative uses for a brick; other subjects with a blue background were given the same task. Responses were scored by a panel of judges and results from scores of creativity are given in the accompanying table. Higher scores correspond to more creativity. The researchers make the claim that "blue enhances performance on a creative task." Assume that the two samples are independent simple random samples selected from normally distributed populations, and do not assume that the population standard deviations are equal. Complete parts (a) and (b). Click the icon to view the summary statistics. a. Use a 0.05 significance level to test the claim that blue enhances performance on a creative task. What are the null and alternative hypotheses? OA. Ho: H₁ H₂ H₁: Hy <H₂ OC. Ho: H₁ H₂ H₁ H₁ H₂ B. Ho: H₁ H2 H₁ H₁ H₂ D. Ho: H₁ H2 H₁: H₁ H₂ The test statistic, t, is 3.73. (Round to two decimal places as needed.) The P-value is 0. (Round to three decimal places as needed.) State the conclusion for the test.
Researchers conducted trials to investigate the effects of color on creativity. Subjects with a red background were asked to think of creative uses for a brick; other subjects with a blue background were given the same task. Responses were scored by a panel of judges and results from scores of creativity are given in the accompanying table. Higher scores correspond to more creativity. The researchers make the claim that "blue enhances performance on a creative task." Assume that the two samples are indonandant cimple random complec calacted from normally distributed annulations and do not assume that - X Response Summary Statistics the popula Click VIDIO B OA. Fa pe B. Re cr OC. Fa pe OD. Re ori Background H n Blue Red Print <₁-₂0 (Round to two decimal places as needed.) X H₁ 39 3.73 H₂ 40 3.14 Done S 0.52 0.85 ce on a hance b. Construct the confidence interval suitable for testing the claim in part (a). What is it about the confidence interval that results in the same conclusion from part (a)?
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Transcribed Image Text:Researchers conducted trials to investigate the effects of color on creativity. Subjects with a red background were asked to think of creative uses for a brick; other subjects with a blue background were given the same task. Responses were scored by a panel of judges and results from scores of creativity are given in the accompanying table. Higher scores correspond to more creativity. The researchers make the claim that "blue enhances performance on a creative task." Assume that the two samples are indonandant cimple random complec calacted from normally distributed annulations and do not assume that - X Response Summary Statistics the popula Click VIDIO B OA. Fa pe B. Re cr OC. Fa pe OD. Re ori Background H n Blue Red Print <₁-₂0 (Round to two decimal places as needed.) X H₁ 39 3.73 H₂ 40 3.14 Done S 0.52 0.85 ce on a hance b. Construct the confidence interval suitable for testing the claim in part (a). What is it about the confidence interval that results in the same conclusion from part (a)?
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