Discussion:
Q: 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 ± 2 cm. The following data is MegaStat output 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
|
|
half-width
|
4.302
|
|
|
|
|
1st quartile
|
98.850
|
|
median
|
99.200
|
|
3rd quartile
|
100.550
|
|
interquartile range
|
1.700
|
|
mode
|
103.000
|