need to answer number 4 and show the actual work

The quality control manager at a light bulb factory needs to determine whether the average life of a large shipment of light bulbs is equal to the specified value of 350 hours. The process standard deviation is known to be 80 hours. A

random sample of 36 light bulbs indicates a sample mean life of 300 hours. At

the 0.01 level of significance, is there evidence that the mean life is different from 350 hours? Answer the question by using all the steps of hypothesis testing.

C Solved: A Major Department Sto x cuny > STUDENTS X Bb Course Documents - 2019 Spri X W BUS 30.203SP2019doc (1).doc x Homework Help - Q&A from Onli x + X -) * Office Editing for Docs, Sheets & Slides | chrome-extension://bpmcpldpdmajfigpchkicefoigmkfalc/views/app.html W BUS 30.2Q3SP2019doc (1).doc Edits will not be automatically saved. Save now Download Share File Edit Format Tools Help Unsaved changes Normal Times 11 BIU A . A. 4. The quality control manager at a light bulb factory needs to determine whether the average life of a large shipment of light bulbs is equal to the specified value of 350 hours. The process standard deviation is known to be 80 hours. A random sample of 36 light bulbs indicates a sample mean life of 300 hours. At the 0.01 level of significance, is there evidence that the mean life is different from 350 hours? Answer the question by using all the steps of hypothesis testing. O 9 C O MO S + 6 7 10:00