Question
Tete Test-Meagan Reed x a search 4 https/Awww.mathodcom/Student/Payerrest.aspx?testld- 59740762 Applied Managerial Statistics 100) ning 00 27 49 submit Time Re Quiz: Week 7 Quiz This Quiz: 60 pts possible 11 of 15 (9 complete) This Question: 4 pts A manufacturer claims that the of its tires is miles for a consumer protection agency and you are testing these ties. Assume the lise spans of the ties ae normaly distributed. You select 100 ties at life span 47,000 You work random and test them The mean life span is 46.776 mil Assume o 900. Complete parts (a)through (c) (a) Assuming the manufacturers comect is the mean of the sample is 46.776 mies or less? claim is what probability that th (Round to four decimal places as needed.) what do you think of the manufacturer's claim? (b) using your answer form part (a) within the range of a usual event, namely withn of the mean ofthe sample means sidered unusual sinc T be becau the sample mean The claim is a of 46.TT6 miles? Why or why not? c) Assuming the manufacturers claim is true. would it be unusual to have an ndMdual ture with a life spa of the mean for an individual time. within the range of a usual event, namely withi 46,776 Enter your answer in the answer box :00 AM *script:doExert Type here to search
Explanation / Answer
a.
=NORMDIST(46776,47000,90,1)
probability=0.006
b.
the claim is accepted ,beacause sample mean will be considered unusual since it doesnot lie within the range
c.
No,because 46776 doesnot lie within the range .
