One study claimed that 91%

Question

of college students identify themselves as procrastinators. A professor believes that the claim regarding college students is too high. The professor conducts a simple random sample of 161
college students and finds that 140
of them identify themselves as procrastinators. Does this evidence support the professor’s claim that fewer than 91%
of college students are procrastinators? Use a 0.02
level of significance.
Step 3 of 3: Draw a conclusion and interpret the decision.We fail to reject the null hypothesis and conclude that there is sufficient evidence at a 0.02 level of significance that fewer than 91 % of college
students are procrastinators.

We reject the null hypothesis and conclude that there is sufficient evidence at a 0.02 level of significance that fewer than 91 % of college students
are procrastinators.

We fail to reject the null hypothesis and conclude that there is insufficient evidence at a 0.02 level of significance that fewer than 91 % of college
students are procrastinators.

We reject the null hypothesis and conclude that there is insufficient evidence at a 0.02 level of significance that fewer than 91 % of college
students are procrastinators.

Answer 1

We reject the null hypothesis and conclude that there is sufficient evidence at a 0.02 level of significance that fewer than 91% of college students are procrastinators. This means that the professor's claim that the percentage of college students who are procrastinators is lower than 91% is supported by the evidence from the sample.