Women athletes at a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 36 women athletes at the school showed that 23 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67% ? Use a 10% level of significance. LAUSE SALT (a) What is the level of significance? 0.10 ✓ (b) State the null and alternate hypotheses. O Ho: P<0.67; H₁: p= 0.67 Ho: P-0.67; H₁: p < 0.67 O Ho: P-0.67; H₁: P 0.67 O Ho: P-0.67; H₁: p > 0.67 What sampling distribution will you use? O The Student's t, since np < 5 and ng < 5. O The standard normal, since np < 5 and ng < 5. O The standard normal, since np > 5 and ng > 5 O The Student's t, since np > 5 and ng > 5 What is the value of the sample test statistic? (Round your answer to two decimal places.) -1.11 x (c) Find the P-value of the test statistic. (Round your answer to four decimal places.) 0.1335 x x Sketch the sampling distribution and show the area corresponding to the P-value. -2 0 2 00-3 -1 0 2 300-3 -2 -1 0 1 2 0-3 -2 -1 0 1 2 O

Women athletes at a certain university have a long-term graduation rate of 67%. Over the past several years, a random sample of 36 women athletes at the school showed that 23 eventually graduated. Does this indicate that the population proportion of women athletes who graduate from the university is now less than 67% ? Use a 10% level of significance. LAUSE SALT (a) What is the level of significance? 0.10 ✓ (b) State the null and alternate hypotheses. O Ho: P<0.67; H₁: p= 0.67 Ho: P-0.67; H₁: p < 0.67 O Ho: P-0.67; H₁: P 0.67 O Ho: P-0.67; H₁: p > 0.67 What sampling distribution will you use? O The Student's t, since np < 5 and ng < 5. O The standard normal, since np < 5 and ng < 5. O The standard normal, since np > 5 and ng > 5 O The Student's t, since np > 5 and ng > 5 What is the value of the sample test statistic? (Round your answer to two decimal places.) -1.11 x (c) Find the P-value of the test statistic. (Round your answer to four decimal places.) 0.1335 x x Sketch the sampling distribution and show the area corresponding to the P-value. -2 0 2 00-3 -1 0 2 300-3 -2 -1 0 1 2 0-3 -2 -1 0 1 2 O

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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