Kizspy | Question: 112
(Choose 1 answer)
(See picture)
Α. -2.7
B. -4.1
C. -3.6
D. -5.2
College students majoring in computer science and interested in pursuing careers in computer security were randomly put into either Python or PowerShell classes. In a standard security certification exam, 230 students who took Python scored an average of 76.5,while 185 students who took PowerShell averaged 78.8. Suppose that the POPULATION standard deviation of Python and Powershell grades are 7.4 and 5.6 respectively.
We want to ask whether there is sufficient evidence of a difference in the test results. What is the test statistic for
Ηο: μ1 - μ2 = 0 and H₁: μ1 - μ270?
