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Michelle is a counselor at the local crises center. She wishes to determine if there is a relationship between the gender of an individual and the amount of alcohol consumed. She took a random sample of 68 files to test her assumption. At the .05 significance level, can she conclude that alcohol consumption is related to gender? Use the five-step hypothesis test and show your work or provide output.
Alcohol Consumption
Gender Low Moderate High
Male 10 9 8
Female 13 16 12
Step 1: Set the Hypothesis
Ho:
Ha:
Step 2: Set the level of Significance
Step 3: Determine the type of test - Please name the type of test
Step 4: Step 4: Calculate the observed value of the test statistics
Step 5: Calculate the critical value of test statistics and explain the decision rule.
Correlation based on Scatter Plot - Draw the scatter plot for the variables.
The rest have no opinion. Suppose that a sample of 100 American adults is quizzed on the subject. What is the probability of the following events?
What is the major difference between finding significance and confidence intervals using population samples or using population proportions?
Provide an example of a hypothesis test you could perform at work or at home. State what the Null and the Alternative hypotheses would be in your test.
Suppose that about 48% of all infants are girls. The maternity ward at a large hospital handles 1000 deliveries per year. A smaller hospital in the same city records about 50 deliveries per year. At which hospital is it more likely that between 46..
The significance level of a statistical test is equal to the probability that the null hypothesis is true.
To test whether the significant difference between two proportion test using large sample test.
Although there is a popular belief that herbal remedies such as ginkgo biloba and ginseng may improve learning and memory in healthy adults, these effects are usually not supported by well-controlled research.
The average weight of 40 randomly selected minivans was 4150 pounds. The standard deviation was 480 pounds. Find the 99% confidence interval of the true weight of the minivans.
Explain how you can determine n3 from knowing n1 and n2. Thus, the multinomial distribution of (n1, n2, n3) is actually two-dimensional.
Is this statistically significant evidence that the candidate has enough valid signatures overall? Explain.
You are a manager with Appetizer. The company owns a chain of restaurants in the United States. Appetizer is looking for an opportunity to expand.
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