Suppose a study was done to determine if the average amount of sleep that students get the day before an exam is less than 6 hours.An SRS of 100 students from a university was taken and a mean of 5.5 hours was computed from the sample.The figure below provides the results of the analysis. What is the P-value?
A)-2.5
B)0
C).006
D)This can't be determined from the given information.

Question

Suppose a study was done to determine if the average amount of sleep that students get the day before an exam is less than 6 hours.An SRS of 100 students from a university was taken and a mean of 5.5 hours was computed from the sample.The figure below provides the results of the analysis.  What is the P-value?
A)-2.5 
B)0 
C).006 
D)This can't be determined from the given information.

Quizplus · Accepted Answer

The test statistic (t-score) is -2.5 and the degrees of freedom is 99. Using a t-distribution table or a statistical software, we can find that the P-value is approximately 0.006, which is less than the typical significance level of 0.05. Therefore, we reject the null hypothesis and conclude that there is evidence that the average amount of sleep that students get the day before an exam is less than 6 hours.

Suppose a Study Was Done to Determine If the Average