Question

It is reported in USA Today that the average flight cost nationwide is $368.88. You have...

It is reported in USA Today that the average flight cost nationwide is $368.88. You have never paid close to that amount and you want to perform a hypothesis test that the true average is actually less than $368.88. What are the appropriate hypotheses for this test?

Question 1 options:

1)

HO: μ ≤ 368.88
HA: μ > 368.88

2)

HO: μ > 368.88
HA: μ ≤ 368.88

3)

HO: μ = 368.88
HA: μ ≠ 368.88

4)

HO: μ ≥ 368.88
HA: μ < 368.88

5)

HO: μ < 368.88
HA: μ ≥ 368.88

Suppose the national average dollar amount for an automobile insurance claim is $618.255. You work for an agency in Michigan and you are interested in whether or not the state average is different from the national average. The hypotheses for this scenario are as follows: Null Hypothesis: μ = 618.255, Alternative Hypothesis: μ ≠ 618.255. A random sample of 55 claims shows an average amount of $615.599 with a standard deviation of $72.2183. What is the test statistic and p-value for this test?

Question 2 options:

1)

Test Statistic: -0.273, P-Value: 0.7861

2)

Test Statistic: -0.273, P-Value: 0.39305

3)

Test Statistic: 0.273, P-Value: 0.7861

4)

Test Statistic: -0.273, P-Value: 1.6069

5)

Test Statistic: -0.273, P-Value: 0.607

In the year 2000, the average vehicle had a fuel economy of 20.01 MPG. You are curious as to whether the average in the present day is less than the historical value. The hypotheses for this scenario are as follows: Null Hypothesis: μ ≥ 20.01, Alternative Hypothesis: μ < 20.01. A random sample of 31 vehicles shows an average economy of 21.06 MPG with a standard deviation of 5.384 MPG. What is the test statistic and p-value for this test?

Question 3 options:

1)

Test Statistic: -1.086, P-Value: 0.8569

2)

Test Statistic: 1.086, P-Value: 1.7138

3)

Test Statistic: 1.086, P-Value: 0.8569

4)

Test Statistic: 1.086, P-Value: 0.1431

5)

Test Statistic: -1.086, P-Value: 0.1431

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