A hospital wants to determine if the type of treatment for pneumonia is a factor in recovery time? The table below shows the number of days to recovery for several randomly selected pneumonia patients that had various types of treatment. Overnight Hospital Stay A Few Hours in the Hospital Sent Home With Medicine 11 8 25 12 20 22 17 18 19 20 16 12 15 13 9 Assume that all distributions are normal, the three population standard deviations are all the same, and the data was collected independently and randomly. Use a level of significance of a = 0.01. Ho: μι = μ2 = 13 H₁: At least two of the means differ from each other. 1. For this study, we should use Select an answer ✓ 2. The test-statistic for this data = (Please show your answer to 3 decimal places.) (Please show your answer to 4 decimal places.) 3. The p-value for this sample= 4. The p-value is Select an answer 5. Base on this, we should Select an answer 6. As such, the final conclusion is that... 30 13 26 16 13 25 14 α hypothesis There is insufficient evidence to support the claim that treatment type is a factor in recovery time for pneumonia. There is sufficient evidence to support the claim that treatment type is a factor in recovery time for pneumonia.

A factory produces sacks of flour, a sample of 14 pieces with the following weights are taken:Find the mean, standard deviation and variance

7.Which of the values below is closest to the IQR for a normally distributed population with a variance of 36? chosse one: 5,6,7,8,9

Choose the appropriate statistical test. When computing, be sure to round each answer as indicated. A dentist wonders if depression affects ratings of tooth pain. In the general population, using a scale of 1-10 with higher values indicating more pain, the average pain rating for patients with toothaches is 6.8. A sample of 30 patients that show high levels of depression have an average pain rating of 7.1 (variance 0.8). What should the dentist determine? 1. Calculate the estimated standard error. (round to 3 decimals). [st.error] 2. What is thet-obtained? (round to 3 decimals). 3. What is the t-cv? (exact value) 4. What is your conclusion? Only type "Reject" or Retain"

Listed below are the top 10 annual salaries​ (in millions of​ dollars) of TV personalities. Find the​ range, variance, and standard deviation for the sample data. Given that these are the top 10​ salaries, do we know anything about the variation of salaries of TV personalities in​ general?   41      40      38      31      23      21      19      18      17.8      17.2

Listed below are the top 10 annual salaries​ (in millions of​ dollars) of TV personalities. Find the​ range, variance, and standard deviation for the sample data. Given that these are the top 10​ salaries, do we know anything about the variation of salaries of TV personalities in​ general?   40      39      38      31      23      19      16      12      11.7      11.1    The range of the sample data is ​$ ? million. ​(Type an integer or a​ decimal.)