Name Show all your work Section 10.4 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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Please answer a,b,c,d and e thank you! SHOW ALL WORK please and explain each answer show me how you got the answer please thank you!

Name
Section 10.4
Page 1 of 1
Show all your work
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:Name Section 10.4 Page 1 of 1 Show all your work 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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