A computer system administrator noticed that computers running a particular operating system seem to freeze up more often as the installation of the operating system ages. She measures the time (in minutes) before freeze-up for6

computers one month after installation and for6

computers seven months after installation. The results are shown. Can you conclude that the time to freeze-up is more variable in the seventh month than the first month after installation? Let?

1

denote the variability in time to freeze-up in the first month after installation. Use the=

?

0.10

level and the critical value method with the table.

Frozen computer: A computer system administrator noticed that computers running a particular operating system seem to freeze up more often as the installation of the operating system ages. She measures the time (in minutes) before freeze-up for 6 computers one month after installation and for 6 computers seven months after installation. The results are shown. Can you conclude that the time to freeze-up is more variable in the seventh month than the first month after installation? Let of denote the variability in time to freeze-up in the first month after installation. Use the a = 0.10 level and the critical value method with the table. One month: 245.3 207.4 233.1 215.9 235.1 225.6 Seven months: 84.3 53.2 127.3 201.3 174.2 103.3 Send data to Excel Part: 0 / 5 State the null and alternate hypothesis. Ho H This is a (Choose one) V test