Use the following scenario to

Use the following scenario to answer the next 6 questions:

M&Ms are your favorite vending machine snack and you purchase them often.  Lately, it seems like the bags have been having a disproportionate distribution of the colors.  The company claims that 24% of the candies per bag should be blue.  You decide to test this claim for yourself.  You purchase a large bag and find that 38 of the 224 candies are blue.  Before complaining to the company, you want to be fairly sure of your accusation, so you set a 1% significance level for your test.  Do you have sufficient evidence that the color distribution is different than advertised?

The appropriate degrees of freedom for this test are:

Group of answer choices

Degrees of freedom aren’t applicable to this test.
38
1
224

Use the following scenario to

Use the following scenario to answer the next 6 questions.

An engineer has designed a valve that will regulate water pressure on an automobile engine.  The valve was tested on 30 engines and the mean pressure was 4.8 psi with a standard deviation of 1 psi.  If the valve was designed to produce an overall mean pressure of 5.0 psi, is there sufficient evidence at the 10% level of significance that the valve performs below specifications?

Choose the statement that matches your decision & conclusion.
Group of answer choices

Fail to reject the null: there is NOT sufficient evidence that the valve performs below specifications.
Fail to reject the null: there IS sufficient evidence to conclude that the valve performs below specifications.
Reject the null: there is NOT sufficient evidence that the valve performs below specifications.
Reject the null: there IS sufficient evidence that the valve performs below specifications.

Use the following scenario to

Use the following scenario to answer the next 6 questions:

M&Ms are your favorite vending machine snack and you purchase them often.  Lately, it seems like the bags have been having a disproportionate distribution of the colors.  The company claims that 24% of the candies per bag should be blue.  You decide to test this claim for yourself.  You purchase a large bag and find that 38 of the 224 candies are blue.  Before complaining to the company, you want to be fairly sure of your accusation, so you set a 1% significance level for your test.  Do you have sufficient evidence that the color distribution is different than advertised?

Based on the data, the value of the test statistic is: 
 

Use the following scenario to

Use the following scenario to answer the next 6 questions:

M&Ms are your favorite vending machine snack and you purchase them often.  Lately, it seems like the bags have been having a disproportionate distribution of the colors.  The company claims that 24% of the candies per bag should be blue.  You decide to test this claim for yourself.  You purchase a large bag and find that 38 of the 224 candies are blue.  Before complaining to the company, you want to be fairly sure of your accusation, so you set a 1% significance level for your test.  Do you have sufficient evidence that the color distribution is different than advertised?

In this scenario, the decision to use a two-tailed versus a one-tailed test affected our ability to reject the null (and thus our conclusion).  
Group of answer choices

True
False

Use the following scenario to

Use the following scenario to answer the next 6 questions.

An engineer has designed a valve that will regulate water pressure on an automobile engine.  The valve was tested on 30 engines and the mean pressure was 4.8 psi with a standard deviation of 1 psi.  If the valve was designed to produce an overall mean pressure of 5.0 psi, is there sufficient evidence at the 10% level of significance that the valve performs below specifications?

The appropriate hypothesis test for this scenario is:  
Group of answer choices

right-tailed
two-tailed
left-tailed

Use the following scenario to

Use the following scenario to answer the next 6 questions:

M&Ms are your favorite vending machine snack and you purchase them often.  Lately, it seems like the bags have been having a disproportionate distribution of the colors.  The company claims that 24% of the candies per bag should be blue.  You decide to test this claim for yourself.  You purchase a large bag and find that 38 of the 224 candies are blue.  Before complaining to the company, you want to be fairly sure of your accusation, so you set a 1% significance level for your test.  Do you have sufficient evidence that the color distribution is different than advertised?

The appropriate hypothesis test for this scenario is:
Group of answer choices

left-tailed
two-tailed
right-taile

Use the following scenario to

Use the following scenario to answer the next 6 questions.

An engineer has designed a valve that will regulate water pressure on an automobile engine.  The valve was tested on 30 engines and the mean pressure was 4.8 psi with a standard deviation of 1 psi.  If the valve was designed to produce an overall mean pressure of 5.0 psi, is there sufficient evidence at the 10% level of significance that the valve performs below specifications?

Based on the data, the value of the test statistic is:

Use the following scenario to

Use the following scenario to answer the next 6 questions.

An engineer has designed a valve that will regulate water pressure on an automobile engine.  The valve was tested on 30 engines and the mean pressure was 4.8 psi with a standard deviation of 1 psi.  If the valve was designed to produce an overall mean pressure of 5.0 psi, is there sufficient evidence at the 10% level of significance that the valve performs below specifications?

The appropriate degrees of freedom for this test are: 
Group of answer choices

30
29
Degrees of freedom aren’t applicable to this test.
31

Use the following scenario to

Use the following scenario to answer the next 6 questions.

An engineer has designed a valve that will regulate water pressure on an automobile engine.  The valve was tested on 30 engines and the mean pressure was 4.8 psi with a standard deviation of 1 psi.  If the valve was designed to produce an overall mean pressure of 5.0 psi, is there sufficient evidence at the 10% level of significance that the valve performs below specifications?

In this scenario, the decision to use a two-tailed versus a one-tailed test affected our ability to reject the null (and thus our conclusion).  
Group of answer choices

True
False

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