Question

$6.00 (TCO C, D) Tesla Motors needs to buy axles for their new car. They are considering using Chris Cross Manufacturing as a

Found in Education: General-Education
Chapter 1, # 5
Posted by :
volcanblack
 
 
Q:

(TCO C, D) Tesla Motors needs to buy axles for their new car. They are considering using Chris Cross Manufacturing as a vendor. Tesla's requirement is that 95% of the axles are 100 cm ± 5 cm. The following data is from a test run from Chris Cross Manufacturing. Should Tesla select them as a vendor? Explain your answer.

Descriptive statistics

count

16

mean

99.850

sample variance

4.627

sample standard deviation

2.151

minimum

96.9

maximum

104

range

7.1

population variance

4.338

population standard deviation

2.083

standard error of the mean

0.538

tolerance interval 95.45% lower

95.548

tolerance interval 95.45% upper

104.152

margin of error

4.302

1st quartile

98.850

median

99.200

3rd quartile

100.550

interquartile range

1.700

mode

103.000

(Points : 25)
Teslas´requirements are

Lower value is 95

Upper value is 105, at the 2 st dv value of 5 which means 1 st dv is 2.5 +/- but the population st dv is 2.083 which is smaller than 2.5. Also sample interval is outside of tolerance interval of population, so all this indicate that we should not select Tesla as a vendor

 

Tutorial
 
$6.00
(TCO C, D) Tesla Motors needs to buy axles for their new car. They are considering using Chris Cross Manufacturing as a
  • This tutorial was purchased 10 times and rated No Rating by students like you.
  • Posted on Dec 13, 2011 at 11:07:32PM
A:
Preview: ... andard deviation 2.083 standard error of the mean 0.538 tolerance interval 95.45% lower 95.548 tolerance interval 95.45% upper 104.152 margin of error 4.302 1st quartile 98.850 median 99.200 3rd quartile 100.550 interqua ...
The full tutorial is about 199 words long .