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Let x be a random variable that represents the batting average of a professional baseball player. Let y be a random variable that represents the percentage of strikeouts of a professional baseball player. A random sample of n = 6 professional baseball players gave the following information. 0.310 0.340 0.248 0.367 0.269 Conclusion X y 2.9 0.318 (a) Find Ex, Ey, Ex, Ey, Exy, and r. (Round only r to three decimal places.) Eyal critical tal % tal 7.8 Exal (b) Use a 5% level of significance to test the claim that p = 0. (Round your answers to three decimal places.) 4.0 Ex= Ey=[ 8.6 (c) Find S, a, and b. (Round your answers to four decimal places.) bal critical t Reject the null hypothesis, there is sufficient evidence that p differs from 0. Reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is sufficient evidence that p differs from 0. 3.1 Exyal (d) Find the predicted percentage y of strikeouts for a player with an x = 0.280 batting average. (Round your answer to two decimal places.) 11.1 (e) Find an 80% confidence interval for y when x = 0.280. (Round your answers to two decimal places.) %upper limit % lower limit (1) Use a 5% level of significance to test the claim that ß* 0. (Round your answers to three decimal places.) Conclusion Reject the null hypothesis, there is sufficient evidence that differs from 0. Reject the null hypothesis, there is insufficient evidence that ß differs from 0. Fail to reject the null hypothesis, there is insufficient evidence that differs from 0. Fail to reject the null hypothesis, there is sufficient evidence that differs from 0.

Let x be a random variable that represents the batting average of a professional baseball player. Let y be a random variable that represents the percentage of strikeouts of a professional baseball player. A random sample of n = 6 professional baseball players gave the following information. 0.310 0.340 0.248 0.367 0.269 Conclusion X y 2.9 0.318 (a) Find Ex, Ey, Ex, Ey, Exy, and r. (Round only r to three decimal places.) Eyal critical tal % tal 7.8 Exal (b) Use a 5% level of significance to test the claim that p = 0. (Round your answers to three decimal places.) 4.0 Ex= Ey=[ 8.6 (c) Find S, a, and b. (Round your answers to four decimal places.) bal critical t Reject the null hypothesis, there is sufficient evidence that p differs from 0. Reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is sufficient evidence that p differs from 0. 3.1 Exyal (d) Find the predicted percentage y of strikeouts for a player with an x = 0.280 batting average. (Round your answer to two decimal places.) 11.1 (e) Find an 80% confidence interval for y when x = 0.280. (Round your answers to two decimal places.) %upper limit % lower limit (1) Use a 5% level of significance to test the claim that ß* 0. (Round your answers to three decimal places.) Conclusion Reject the null hypothesis, there is sufficient evidence that differs from 0. Reject the null hypothesis, there is insufficient evidence that ß differs from 0. Fail to reject the null hypothesis, there is insufficient evidence that differs from 0. Fail to reject the null hypothesis, there is sufficient evidence that differs from 0.

MATLAB: An Introduction with Applications
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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O Let x be a random variable that represents the batting average of a professional baseball player. Let y be a random variable that represents the percentage of strikeouts of a professional baseball player. A random sample of n = 6 professional baseball players gave the following information. 0.310 0.340 0.248 0.367 0.269 Conclusion X 0.318 y 2.9 (a) Find Ex, Ey, Ex, Ey, Exy, and r. (Round only r to three decimal places.) Eyl % t Conclusion 7.8 a= Exal (b) Use a 5% level of significance to test the claim that p = 0. (Round your answers to three decimal places.) critical t Ex²=1 4.0 8.6 Ev=l (c) Find S, a, and b. (Round your answers to four decimal places.) b= 3.1 Reject the null hypothesis, there is sufficient evidence that p differs from 0. Reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is sufficient evidence that p differs from 0. Se= (d) Find the predicted percentage y of strikeouts for a player with an x = 0.280 batting average. (Round your answer to two decimal places.) Exy=l 11.1 (e) Find an 80% confidence interval for y when x = 0.280. (Round your answers to two decimal places.) %upper limit L lower limit (f) Use a 5% level of significance to test the claim that 30. (Round your answers to three decimal places.) critical t=l differs from 0. Reject the null Reject the null hypothesis, there is sufficient evidence that hypothesis, there is insufficient evidence that differs from 0. Fail to reject the null hypothesis, there is insufficient evidence that differs from 0. Fail to reject the null hypothesis, there is sufficient evidence that differs from 0.
Transcribed Image Text:O Let x be a random variable that represents the batting average of a professional baseball player. Let y be a random variable that represents the percentage of strikeouts of a professional baseball player. A random sample of n = 6 professional baseball players gave the following information. 0.310 0.340 0.248 0.367 0.269 Conclusion X 0.318 y 2.9 (a) Find Ex, Ey, Ex, Ey, Exy, and r. (Round only r to three decimal places.) Eyl % t Conclusion 7.8 a= Exal (b) Use a 5% level of significance to test the claim that p = 0. (Round your answers to three decimal places.) critical t Ex²=1 4.0 8.6 Ev=l (c) Find S, a, and b. (Round your answers to four decimal places.) b= 3.1 Reject the null hypothesis, there is sufficient evidence that p differs from 0. Reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is insufficient evidence that p differs from 0. Fail to reject the null hypothesis, there is sufficient evidence that p differs from 0. Se= (d) Find the predicted percentage y of strikeouts for a player with an x = 0.280 batting average. (Round your answer to two decimal places.) Exy=l 11.1 (e) Find an 80% confidence interval for y when x = 0.280. (Round your answers to two decimal places.) %upper limit L lower limit (f) Use a 5% level of significance to test the claim that 30. (Round your answers to three decimal places.) critical t=l differs from 0. Reject the null Reject the null hypothesis, there is sufficient evidence that hypothesis, there is insufficient evidence that differs from 0. Fail to reject the null hypothesis, there is insufficient evidence that differs from 0. Fail to reject the null hypothesis, there is sufficient evidence that differs from 0.
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