Please help me find test statistic and critical value
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- After finding the range for the age variable, you worry that perhaps this value is being influenced by extreme scores! So, you decide to find the interquartile range. After all, you know the IQR has some benefits. This time, you go to SPSS and select Analyze > Descriptives > Frequencies. You put the age variable in the "variables" box and then click Statistics. Make sure Quartiles, Mean, Median, Mode, Range, Standard Deviation, and Variance are checked (because it never hurts to get lots of information :). You click continue, then ok.Using the Percentiles that are reported in the output (these are equivalent to Q1, Q2, and Q3), you are able to determine that the interquartile range for the "age" variable is: Group of answer choices 35 20 22 23.29 24 4What are the Class 1 error rate and the Class 0 error rate on the test data?PLEASE DO IN Excel A clinical trial is run to assess the effects of different forms of regular exercise on HDL levels in persons between the ages of 18 and 29. Participants in the study are randomly assigned to one of three exercise groups - Weight training, Aerobic exercise or Stretching/Yoga – and instructed to follow the program for 8 weeks. Their HDL levels are measured after 8 weeks and are summarized below. Is there a significant difference in mean HDL levels among the exercise groups? Run the test at a 5% level of significance. HINT: SSerror = 7286.5. Exercise Group N Mean Std Dev Weight Training 20 49.7 10.2 Aerobic Exercise 20 43.1 11.1 Stretching/Yoga 20 57 12.5 Step 1. Set up hypotheses and determine level of significance. Ho: H1: alpha: Step 2. Select the appropriate test statistic and give its formula.…
- Discuss quartiles and their importance.what is the tird quartile*PLEASE show in excel A different investigator conducts a second study to investigate whether there is a difference in mean PEF in children with chronic bronchitis as compared to those without. Data on PEF are collected and summarized below. Based on the data, is there statistical evidence of a lower mean PEF in children with chronic bronchitis as compared to those without? Run the appropriate test at a=0.05. Group Number of Children Mean PEF Std Dev PEF Chronic Bronchitis 25 281 68 No Chronic Bronchitis 25 319 74 Step 1. Set up hypotheses and determine level of significance. Ho: H1: alpha: Step 2. Select the appropriate test statistic and give its formula. Step 3. Set up decision rule. Step 4. Compute the test statistic Step 5. Conclusion.
- What are mean and standard deviation for the heights of people in that country? What is your z-score with these new parameters? The average height for Pilipino men are 5 foot, 3.7 inches with a standard deviation of 2.92 inches. The average height for Pilipino women are 4 foot, 11 inches with a standard deviation of 2.8 inches.The human resource manager of company wanted to know how the Performance of the workers depend on Environment, Value, Motivation and Remuneration. He selected 100 workers randomly and used a questionnaire to obtain the scores on their perceived Environment, Value, Motivation and Remuneration. The final score on each variable ranged from 1 to 10, where a high score is supposed to be associated with high performance. In the study, the key performance index (KPI) was used as the indicator of worker performance. The following are some of the outputs from SPSS. a) Write the linear regression equation of Performance upon Environment, Value, Motivation and Remuneration. b) Interpret the coefficients for Environment in the regression equation in (a). c) Test if there is a problem of multicollinearityThe best depiction of a population characteristic is a(an): Dependent variable Statistic Independent variable Parameter