Miles (1000s of miles) Mean 150.7 Variance 4.661 Observations 46 Hypothesized Mean 150 45 p = Ex 1.234 t Stat P(Tet) one-tail t Critical one-tail P(Tet) two tail t Critical two tail Confidence Level(95.O%) 0.641 2.185 0.017 1.679 0.034 2.014 t= Ex: 1.234 What condition is met for the use of a t-distribution? Pick Pick z = Ex 1 The population is stated to be not skewed. The sample size is larger than 30. n = Ex 5 Degrees of freedom = Ex: 5 s = Ex 1.234
Miles (1000s of miles) Mean 150.7 Variance 4.661 Observations 46 Hypothesized Mean 150 45 p = Ex 1.234 t Stat P(Tet) one-tail t Critical one-tail P(Tet) two tail t Critical two tail Confidence Level(95.O%) 0.641 2.185 0.017 1.679 0.034 2.014 t= Ex: 1.234 What condition is met for the use of a t-distribution? Pick Pick z = Ex 1 The population is stated to be not skewed. The sample size is larger than 30. n = Ex 5 Degrees of freedom = Ex: 5 s = Ex 1.234
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
An auto maker is interested in information about how long transmissions last. A sample of transmissions are run constantly and the number of miles before the transmission fails is recorded. The auto maker claims that the transmissions can run constantly for over 150,000 miles before failure. The results of the sample are given below.
Transcribed Image Text:Miles (1000s of miles)
Mean
150.7
Variance
4.661
Observations
46
Hypothesized Mean
150
df
45
t Stat
P(Tct) one-tail
t Critical one-tail
2.185
p= Ex: 1.234
0.017
1.679
2
P(Tcnt) two-tail
0.034
t Critical two-tail
t = Ex: 1.234
2.014
Confidence Level(95.0%) 0.641
What condition is met for the use of a t-distribution? Pick
Pick
n = Ex: 5
= Ex: 1 The population is stated to be not skewed.
The sample size is larger than 30.
Degrees of freedom = Ex: 5
s = Ex: 1.234
18
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