Commute times in the U.S. are heavily skewed to the right. We select a random sample of 510 people from the 2000 U.S. Census who reported a non-zero commute time. In this sample, the mean commute time is 28.0 minutes with a standard deviation of 19.1 minutes. Can we conclude from this data that the mean commute time in the U.S. is less than half an hour? Conduct a hypothesis test at the 5% level of significance. What is the p -value for this hypothesis test? (Your answer should be rounded to 4 decimal places.)
H0: >= 30
Ha: < 30
Test statistics
t = ( - ) / (S / sqrt(n) )
= ( 28 - 30) / (19.1 / sqrt(510) )
= -2.36
This is test statistics value.
From T table,
With test statistics 2.36 and df of 509,
p-value = 0.0093
Since p-value < 0.05 level, reject H0.
Commute times in the U.S. are heavily skewed to the right. We select a random sample...
Commute times in the U.S. are heavily skewed to the right. We select a random sample of 45 people from the 2000 U.S. Census who reported a non-zero commute time. In this sample the mean commute time is 25.2 minutes with a standard deviation of 19.1 minutes. Can we conclude from this data that the mean commute time in the U.S. is less than half an hour? Conduct a hypothesis test at the 5% level of significance. What is the...
Commute times in the U.S. are heavily skewed to the right. We select a random sample of 200 people from the 2000 U.S. Census who reported a non-zero commute time. In this sample the mean commute time is 27.5 minutes with a standard deviation of 18.9 minutes. Can we conclude from this data that the mean commute time in the U.S. is less than half an hour? Conduct a hypothesis test at the 5% level of significance. What is the...
Commute times in the U.S. are heavily skewed to the right. We select a random sample of 200 people from the 2000 U.S. Census who reported a non-zero commute time. In this sample the mean commute time is 27.5 minutes with a standard deviation of 18.9 minutes. Can we conclude from this data that the mean commute time in the U.S. is less than half an hour? Conduct a hypothesis test at the 5% level of significance. What is the...
Commute times in the U.S. are heavily skewed to the right. We select a random sample of 200 people from the 2000 U.S. Census who reported a non-zero commute time. In this sample the mean commute time is 27.5 minutes with a standard deviation of 18.9 minutes. Can we conclude from this data that the mean commute time in the U.S. is less than half an hour? Conduct a hypothesis test at the 5% level of significance. What is the...
Commute times in the U.S. are heavily skewed to the right. We select a random sample of 220 people from the 2000 U.S. Census who reported a non-zero commute time. In this sample the mean commute time is 28.3 minutes with a standard deviation of 19.2 minutes. Can we conclude from this data that the mean commute time in the U.S. is less than half an hour? Conduct a hypothesis test at the 5% level of significance. What is the...
Commute times in the U.S. are heavily skewed to the right. We select a random sample of 200 people from the 2000 U.S. Census who reported a non-zero commute time. In this sample the mean commute time is 27.5 minutes with a standard deviation of 18.9 minutes. Can we conclude from this data that the mean commute time in the U.S. is less than half an hour? Conduct a hypothesis test at the 5% level of significance. What is the...
Commute times in the U.S. are heavily skewed to the right. We select a Type numbers in the boxes. random sample of 520 people from the 2000 U.S. Census who reported a non- 10 points zero commute time. In this sample, the mean commute time is 28.1 minutes with a standard deviation of 19.2 minutes. Can we conclude from this data that the mean commute time in the U.S. is less than half an hour? Conduct a hypothesis test at...
Question 12 Commute times in the U.S. are heavily skewed to the right. We select a Type numbers in the boxes. random sample of 230 people from the 2000 U.S. Census who reported a non- 10 points zero commute time. In this sample the mean commute time is 28.6 minutes with a standard deviation of 19.3 minutes. Can we conclude from this data that the mean commute time in the U.S. is less than half an hour? Conduct a hypothesis...
Question 12 Commute times in the U.S. are heavily skewed to the right. We select a Type numbers in the boxes. random sample of 200 people from the 2000 U.S. Census who reported a non- 10 points zero commute time. In this sample the mean commute time is 27.5 minutes with a standard deviation of 18.9 minutes. Can we conclude from this data that the mean commute time in the U.S. is less than half an hour? Conduct a hypothesis...
question 12 AND 13 please Question 12 Commute times in the U.S. are heavily skewed to the right. We select a Type numbers in the boxes random sample of 210 people from the 2000 U.S. Census who reported a non- 10 points zero commute time. In this sample the mean commute time is 28.1 minutes with a standard deviation of 18.8 minutes. Can we conclude from this data that the mean commute time in the U.S. is less than half...