A researcher is interested in comparison of male and female students of Rutgers University in terms of how many hours they study per week. She collects data from 138 female and 115 male students of Rutgers, performs hypothesis testing and finds Z value of 2.86. What conclusion she can make if level of significance is 2%?

• A.Reject H0. There is no significant difference between male and female students in terms of how many hours they study per week
• B.Reject H0. There is significant difference between male and female students in terms of how many hours they study per week
• C.Dont reject H0. There is no significant difference between male and female students in terms of how many hours they study per week
• D.DontrejectH0.Thereissignificantdifferencebetweenmaleandfemalestudentsintermsofhowmanyhourstheystudyperweek

Do employees perform better at work with music playing? The music was turned on during the working hours of a business with 45 employees. Their productivity level averaged 5.2. On a different day the music was turned off and there were 40 workers. The workers' productivity level averaged 4.8. What can we conclude at the .01 level, if computed p-value is 0.12?

• A.Yes. Employees perform better at work when music playing.
• B.No. Employees dont perform better at work when music playing.
• C.Not sufficient information to answer the question.
• D.None of the above