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 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 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 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 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 answer the next 6 questions:

The appropriate hypothesis test for this scenario is:

Group of answer choices

left-tailed

two-tailed

right-taile

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 answer the next 6 questions.

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 answer the next 6 questions.

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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