Answer to Question #7891 in Statistics and Probability for lynn
A major television network is trying to determine whether to increase or decrease the number of news based shows. They did a national survey and found that their population watched 8 shows per week. I need to determine if the mean number of news shows watched in my neighborhood is similar to the national mean.
My mean for my neighborhood is 10.
Question: How did you think that your sample would compare to the national mean? This is your hypothesis. State either the alternate or null hypothesis and identify which one you are stating.
Question: Based on your hypothesis, would you use a one-tailed or two-tailed test? Explain why.
Question: Remember that your sample was very small at 3. With a sample of 3, your degrees of freedom would be 2. Imagine you could have sampled many more people in your neighborhood. Post the number of people you would really want to sample if you could. Consider this your ideal N.
Question: Imagine that you had your ideal N. Your alpha level was .05. Choose a one or two-tailed test as appropriate, and look up the critical value of t. State the value in your post.
Question: What would you conclude about your neighborhood's news-watching behavior as compared to the national average if your obtained t was larger than your critical t value, and what you conclude if your obtained t was smaller than your critical value?
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