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developed. took the drug for 3 months. Blood tests showed that x 8.4 with sample standard deviations- 2.9. Use a 5% level of significance to test the claim that the drug has changed (either way) the mean However, it is thought that this drug may change blood pH. A random sample of 41 patients with arthritis Let x be a random variable that represents the pH of arterial plasma (ie, acidity of the blood). For healthy adults, the mean of the x distribution is -7.4.1 A new drug for arthritis has been on pH level of the blood. LAUSE SALT (a) What is the level of significance? 0.04 x State the null and alternate hypotheses. Ho: H-7A; H₁: 7A O Ho: -7.4; H₂: <74 O Ho: >7.A; H₁: -7.4 O Ho: H7A; H₁: H-74 OHH-7A; H₁: >7.A ✓ (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. O The Student's t, since the sample size is large and d is unknown. The standard normal, since the sample size is large and a is known. O The Student's t, since the sample size is large and a is known. O The standard normal, since the sample size is large and e is unknown. x

developed. took the drug for 3 months. Blood tests showed that x 8.4 with sample standard deviations- 2.9. Use a 5% level of significance to test the claim that the drug has changed (either way) the mean However, it is thought that this drug may change blood pH. A random sample of 41 patients with arthritis Let x be a random variable that represents the pH of arterial plasma (ie, acidity of the blood). For healthy adults, the mean of the x distribution is -7.4.1 A new drug for arthritis has been on pH level of the blood. LAUSE SALT (a) What is the level of significance? 0.04 x State the null and alternate hypotheses. Ho: H-7A; H₁: 7A O Ho: -7.4; H₂: <74 O Ho: >7.A; H₁: -7.4 O Ho: H7A; H₁: H-74 OHH-7A; H₁: >7.A ✓ (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. O The Student's t, since the sample size is large and d is unknown. The standard normal, since the sample size is large and a is known. O The Student's t, since the sample size is large and a is known. O The standard normal, since the sample size is large and e is unknown. x

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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Let x be a random variable that represents the pH of arterial plasma (1.e., acidity of the blood). For healthy adults, the mean of the x distribution is u 7.4.t A new drug for arthritis has been developed. However, it is thought that this drug may change blood pH. A random sample of 41 patients with arthritis took the drug for 3 months. Blood tests showed that x 8.4 with sample standard deviations 2.9. Use a 5% level of significance to test the claim that the drug has changed (either way) the mean pH level of the blood. USE SALT (a) What is the level of significance? 0.04 x State the null and alternate hypotheses Hoi H-7.4; H₁: 7.4 O Hoi H- 7.4; H₁: < 7.4 o Hoi 17.4, Hội phụ 7A o Hoi Ha 7.4, Hai là 7A o Hoi Ho 7.4, Hig>74 (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. O The Student's t, since the sample size is large and a is unknown. The standard normal, since the sample size is large and a is known. O The Student's t, since the sample size is large and a is known. O The standard normal, since the sample size is large and o is unknown. x
Transcribed Image Text:Let x be a random variable that represents the pH of arterial plasma (1.e., acidity of the blood). For healthy adults, the mean of the x distribution is u 7.4.t A new drug for arthritis has been developed. However, it is thought that this drug may change blood pH. A random sample of 41 patients with arthritis took the drug for 3 months. Blood tests showed that x 8.4 with sample standard deviations 2.9. Use a 5% level of significance to test the claim that the drug has changed (either way) the mean pH level of the blood. USE SALT (a) What is the level of significance? 0.04 x State the null and alternate hypotheses Hoi H-7.4; H₁: 7.4 O Hoi H- 7.4; H₁: < 7.4 o Hoi 17.4, Hội phụ 7A o Hoi Ha 7.4, Hai là 7A o Hoi Ho 7.4, Hig>74 (b) What sampling distribution will you use? Explain the rationale for your choice of sampling distribution. O The Student's t, since the sample size is large and a is unknown. The standard normal, since the sample size is large and a is known. O The Student's t, since the sample size is large and a is known. O The standard normal, since the sample size is large and o is unknown. x
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