subject
Mathematics, 17.04.2021 16:00 juanitarodrigue

A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it needs to be replaced. From past studies of this tire, the standard deviation is known to be 8,000. A survey of owners of that tire design is conducted. From the 28 tires surveyed, the mean lifespan was 46,500 miles with a standard deviation of 9,800 miles. Using alpha 0.05, is the data highly inconsistent with the claim?

ansver
Answers: 2

Other questions on the subject: Mathematics

image
Mathematics, 21.06.2019 17:00, sunshine52577oyeor9
Use the graph of the sine function y=2sinθ shown below
Answers: 1
image
Mathematics, 21.06.2019 18:30, rheamskeorsey33
Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?
Answers: 1
image
Mathematics, 21.06.2019 20:00, hlgerardip4wbhx
A50% increase followed by 33 1/2% decrease
Answers: 3
image
Mathematics, 21.06.2019 22:30, muziqbox594
What is the name of a polygon that has four congruent sides and theses angle measures 60,120,60,120?
Answers: 1
You know the right answer?
A particular brand of tires claims that its deluxe tire averages at least 50,000 miles before it nee...

Questions in other subjects: