Question

Question 9 (1 point)

It is reported in USA Today that the average flight cost nationwide is $595.711. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually greater than $595.711. The hypotheses for this situation are as follows: Null Hypothesis: μ ≤ 595.711, Alternative Hypothesis: μ > 595.711. A random sample of 30 flights shows an average cost of $584.559 with a standard deviation of $59.3656. What is the test statistic and p-value for this test?

Question 9 options:

1)	Test Statistic: -1.029, P-Value: 0.156

2)	Test Statistic: -1.029, P-Value: 0.844

3)	Test Statistic: 1.029, P-Value: 0.156

4)	Test Statistic: -1.029, P-Value: 1.688

5)	Test Statistic: 1.029, P-Value: 0.844

Question 10 (1 point)

It is reported in USA Today that the average flight cost nationwide is $506.917. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually less than $506.917. The hypotheses for this situation are as follows: Null Hypothesis: μ ≥ 506.917, Alternative Hypothesis: μ < 506.917. A random sample of 37 flights shows an average cost of $529.226 with a standard deviation of $60.504. What is the test statistic and p-value for this test?

Question 10 options:

1)	Test Statistic: 2.243, P-Value: 0.0156

2)	Test Statistic: 2.243, P-Value: 1.9688

3)	Test Statistic: -2.243, P-Value: 0.9844

4)	Test Statistic: 2.243, P-Value: 0.9844

5)	Test Statistic: -2.243, P-Value: 0.0156

Question 11 (1 point)

It is reported in USA Today that the average flight cost nationwide is $402.86. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually less than $402.86. The hypotheses for this situation are as follows: Null Hypothesis: μ ≥ 402.86, Alternative Hypothesis: μ < 402.86. You take a random sample of national flight cost information and perform a one sample mean hypothesis test. You observe a p-value of 0.0032. What is the appropriate conclusion? Conclude at the 5% level of significance.

Question 11 options:

1)	The true average flight cost is significantly different from $402.86.

2)	The true average flight cost is significantly less than $402.86.

3)	The true average flight cost is significantly greater than $402.86.

4)	The true average flight cost is greater than or equal to $402.86.

5)	We did not find enough evidence to say the true average flight cost is less than $402.86.

Question 12 (1 point)

A medical researcher wants to determine if the average hospital stay of patients that undergo a certain procedure is greater than 9.9 days. The hypotheses for this scenario are as follows: Null Hypothesis: μ ≤ 9.9, Alternative Hypothesis: μ > 9.9. If the researcher takes a random sample of patients and calculates a p-value of 0.0179 based on the data, what is the appropriate conclusion? Conclude at the 5% level of significance.

Question 12 options:

1)	The true average hospital stay of patients is significantly shorter than 9.9 days.

2)	We did not find enough evidence to say the true average hospital stay of patients is longer than 9.9 days.

3)	The true average hospital stay of patients is significantly different from 9.9 days.

4)	The true average hospital stay of patients is significantly longer than 9.9 days.

5)	The true average hospital stay of patients is shorter than or equal to 9.9 days.

Answer 1