A 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. Miles (1000s of miles) | 151.2 | 17.22 Mean Variance What is the level of significance? Ex: 0.12 Observations 44 Hypothesized Mean 150 What is the null hypothesis Ho? v Pick H< 150,000 H= 150,000 df 43 t Stat 1.889 What is the alternative hypothesis P(T<=t) one-tail t Critical one-tail P(T<=t) two-tail t Critical two-tail Confidence Level(95.0%) | 1.129 0.033 1.681 Should Ho be rejected or does H H> 150,000 1? Pick 0.066 2.017 What conclusion can be drawn from the data? Pick What is the 95% confidence interval for the mean life of a transmission? [Ex: 1.234 Does the confidence interval support the results of the hypothesis test? Pick v Why? Pick 3 2.

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Hypothesised mean falls Within /or Without the bounds of our confidence interval 

A 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.
Miles (1000s of miles)
Мean
151.2
Variance
17.22
What is the level of significance?
Ex: 0.12
Observations
44
Hypothesized Mean
150
v Pick
H< 150,000
H = 150,000
What is the null hypothesis Ho?
df
43
t Stat
1.889
P(T<=t) one-tail
What is the alternative hypothesis
0.033
t Critical one-tail
1.681
Should Ho be rejected or does H u> 150,000 ? Pick
P(T<=t) two-tail
t Critical two-tail
Confidence Level(95.0%)| 1.129
0.066
2.017
What conclusion can be drawn from the data?
Pick
What is the 95% confidence interval for the mean life of a transmission? [Ex: 1.234
Does
idenc
I support the results
the hypothesis test? Pick v
Why? Pick
2
>
Transcribed Image Text:A 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. Miles (1000s of miles) Мean 151.2 Variance 17.22 What is the level of significance? Ex: 0.12 Observations 44 Hypothesized Mean 150 v Pick H< 150,000 H = 150,000 What is the null hypothesis Ho? df 43 t Stat 1.889 P(T<=t) one-tail What is the alternative hypothesis 0.033 t Critical one-tail 1.681 Should Ho be rejected or does H u> 150,000 ? Pick P(T<=t) two-tail t Critical two-tail Confidence Level(95.0%)| 1.129 0.066 2.017 What conclusion can be drawn from the data? Pick What is the 95% confidence interval for the mean life of a transmission? [Ex: 1.234 Does idenc I support the results the hypothesis test? Pick v Why? Pick 2 >
A 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.
Miles (1000s of miles)
Mean
151.2
What is the level of significance? Ex: 0.12
Variance
17.22
Observations
44
Hypothesized Mean
150
What is the null hypothesis Ho?
Pick
df
43
t Stat
1.889
P(T<=t) one-tail
What is the alternative hypothesis Ha? Pick
0.033
t Critical one-tail
P(T<=t) two-tail
t Critical two-tail
Confidence Level(95.0%)| 1.129
1.681
Should Ho be rejected or does Ho fail to be rejected? Pick
0.066
2.017
What conclusion can be drawn from the data?
v Pick
Convincing evidence does not exist to conclude that the mean life of a transmission is over 150,000 miles.
Convincing evidence exists to conclude that the mean life of a transmission is over 150,000 miles.
Does the conTidence interval support the resuits of the nypotnesis test?
PICK
Why? Pick
2
3
Transcribed Image Text:A 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. Miles (1000s of miles) Mean 151.2 What is the level of significance? Ex: 0.12 Variance 17.22 Observations 44 Hypothesized Mean 150 What is the null hypothesis Ho? Pick df 43 t Stat 1.889 P(T<=t) one-tail What is the alternative hypothesis Ha? Pick 0.033 t Critical one-tail P(T<=t) two-tail t Critical two-tail Confidence Level(95.0%)| 1.129 1.681 Should Ho be rejected or does Ho fail to be rejected? Pick 0.066 2.017 What conclusion can be drawn from the data? v Pick Convincing evidence does not exist to conclude that the mean life of a transmission is over 150,000 miles. Convincing evidence exists to conclude that the mean life of a transmission is over 150,000 miles. Does the conTidence interval support the resuits of the nypotnesis test? PICK Why? Pick 2 3
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