In 2010, the proportion of students that worked was 75%. A researcher thinks the proportion has increased. A survey of 91 students revealed that 70 are working. Is there enough evidence to conclude the proportion has increased using a level of significance of 10%? a) State the null hypothesis: b) State the alternative hypothesis: c) Verify the test statistic is z = 0.42 d) Find the critical value and draw the rejection region. e) Can you reject the null hypothesis?

In 2010, the proportion of students that worked was 75%. A researcher thinks the proportion has increased. A survey of 91 students revealed that 70 are working. Is there enough evidence to conclude the proportion has increased using a level of significance of 10%? a) State the null hypothesis: b) State the alternative hypothesis: c) Verify the test statistic is z = 0.42 d) Find the critical value and draw the rejection region. e) Can you reject the null hypothesis?

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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Hello please answer A,B,C,D and E thank you!! Please show the steps and all work for each of the problems so i can understand it better thank you!

In 2010, the proportion of students that worked was 75%. A researcher thinks the proportion
has increased. A survey of 91 students revealed that 70 are working. Is there enough
evidence to conclude the proportion has increased using a level of significance of 10%?
a) State the null hypothesis:
b) State the alternative hypothesis:
c) Verify the test statistic is z = 0.42
d) Find the critical value and draw the rejection region.
e) Can you reject the null hypothesis?

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