o test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below. TreatmentObservationA20302533B22262028C40302822 Note: rearrange this to (columns) in excel: A B C20 22 4030 26 3025 20 2833 28 22The null hypothesis is to be tested at the 1% level of significance. The null hypothesis Group of answer choicesshould be revisedNo answer text provided.should not be rejectedshould be rejected
Question
o test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below. TreatmentObservationA20302533B22262028C40302822 Note: rearrange this to (columns) in excel: A B C20 22 4030 26 3025 20 2833 28 22The null hypothesis is to be tested at the 1% level of significance. The null hypothesis Group of answer choicesshould be revisedNo answer text provided.should not be rejectedshould be rejected
Solution
The question seems to be asking for a hypothesis test to determine if there is a significant difference between treatments A, B, and C. However, the question is incomplete and does not provide enough information to perform the test.
Here are the general steps to perform a hypothesis test:
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State the null hypothesis: In this case, the null hypothesis is that there is no difference between the treatments.
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Choose the level of significance: The question states that the level of significance is 1%.
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Calculate the test statistic: This will depend on the type of test you are performing. For comparing means of more than two groups, you would typically use an ANOVA test.
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Determine the critical value: This is the value that the test statistic must exceed in order to reject the null hypothesis. This will depend on the level of significance and the type of test.
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Compare the test statistic to the critical value: If the test statistic is greater than the critical value, you reject the null hypothesis. If it is less than the critical value, you do not reject the null hypothesis.
Without more information, it's impossible to complete steps 3-5 and make a determination about the null hypothesis.
Similar Questions
To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the 3 treatments. You are given the results below. TreatmentObservationA20302533B22262028C40302822 Note: rearrange this to (columns) in excel: A B C20 22 4030 26 3025 20 2833 28 22The test statistic to test the null hypothesis equals Group of answer choices19.2313.131.059.944
A researcher administers a treatment to a sample of participants selected from a population with µ = 80. If a hypothesis test is used to evaluate the effect of the treatment, which combination of factors is most likely to result in rejecting the null hypothesis?Group of answer choicesA sample mean much different than 80 with α = .05A sample mean near 80 with α = .05A sample mean near 80 with α = .01A sample mean much different than 80 with α = .01
Hypothesis testing can result in 3 different types of outcomes?Group of answer choicesTrueFalse
Assuming the experiment was balanced: the number of different treatments used in the experiment, and the number of subjects (separate observations) for each treatment wereGroup of answer choices5 subjects on each of 4 treatments5 subjects on each of five treatments6 subjects on each of 4 treatments6 subjects on each of 5 treatments30 subjects on each of 4 treatments
You obtained a significant test statistic when comparing three treatments in ANOVA. What is the conclusion?
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