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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
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?
Transcribed Image Text: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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