4. In an advanced ballet dance class, it is claimed that 42% of dancers can successfully perform a double pirouette turn. We randomly select 27 advanced level ballet dancers and only 13 of them can successfully do a double. Has the proportion increased? a) State the null and alternative hypotheses. b) Find the test statistic. Round to two decimal places. c) Find the p-value. Round to four decimal places. 3 d) Suppose we chose a 5% significance level. What is your decision?

4. In an advanced ballet dance class, it is claimed that 42% of dancers can successfully perform a double pirouette turn. We randomly select 27 advanced level ballet dancers and only 13 of them can successfully do a double. Has the proportion increased? a) State the null and alternative hypotheses. b) Find the test statistic. Round to two decimal places. c) Find the p-value. Round to four decimal places. 3 d) Suppose we chose a 5% significance level. What is your decision?

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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