ZA music teacher knows from past records that 60% of students taking summer lessons play the piano. The instructor believes that this proportion may have dropped due to the popularity of wind and brass instruments. A random sample of 80 students yielded 43 piano players. Use a- 05. a) State the null and alternate hypotheses. Will we use a left-tailed, right-tailed, or two- tailed test? What is the level of significance? b) Identify the sampling distribution to be used: standard normal or the Student's t. Compute the z or t value of the sample test statistic and sketch its location. c) Find the P value for the sample test statistic. d) Should we reject or fail to reject the null hypothesis?

ZA music teacher knows from past records that 60% of students taking summer lessons play the piano. The instructor believes that this proportion may have dropped due to the popularity of wind and brass instruments. A random sample of 80 students yielded 43 piano players. Use a- 05. a) State the null and alternate hypotheses. Will we use a left-tailed, right-tailed, or two- tailed test? What is the level of significance? b) Identify the sampling distribution to be used: standard normal or the Student's t. Compute the z or t value of the sample test statistic and sketch its location. c) Find the P value for the sample test statistic. d) Should we reject or fail to reject the null hypothesis?

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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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I really need help sketching the location.

ZA music teacher knows from past records that 60% of students taking summer lessons play the
piano. The instructor believes that this proportion may have dropped due to the popularity of
wind and brass instruments. A random sample of 80 students yielded 43 piano players. Use a -
05
a) State the null and alternate hypotheses. Will we use a left-tailed, right-tailed, or two-
tailed test? What is the level of significance?
b) Identify the sampling distribution to be used: standard normal or the Student's t. Compute
the z or t value of the sample test statistic and sketch its location.
c) Find the P value for the sample test statistic.
d) Should we reject or fail to reject the null hypothesis?

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