A. Summarize the probability distribution function in a table. a What is the expected value of students meditating? Show your work. 1.35 C. What is standard deviation? Show your work. 11275
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A survey was conducted among the student population and it is found that 35% of respondents meditated 1 day a week 20% meditated 2 days a week 20% meditated 3 days a week and the rest did not meditate
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- Two different blood pressure medicines are being compared to determine if the average reduction in blood pressure is the same for each medication. The goal of the study is to determine if the medications differ. Twenty men age 50-60 years old are selected for the study. Ten men are chosen at random to receive the first medication and the other 10 men receive the second medication. Each of the 20 men is monitored for one month to determine the change in blood pressure over that time. Minitab provides the 95% confidence interval for (mu1 - mu2) (2.63, 14.18) a. Interpret this 95% CI. b. What assumptions (be specific) are necessary to construct this CI?Resting heart rate varies among different people. Design an experiment and examine whether or not a particular variable (e.g. fitness level, smoking, activity, age, gender) has an effect on heart rate. Begin by making one or more observations. Then formulate a hypothesis that can be tested. Finally, design an experiment to test your hypothesis! You can use yourself and any person you can talk to including family and friends Observations: State one or more observations related to your scientific Observation(s): The Heart rate will change depending on activity Hypothesis: Generate a hypothesis and include a justification for your Hypothesis: Male that are active will have a higher hear rate than females Experiment: Describe your experiment below and state the independent and dependent variables you will be exploring. Explain any specific instructions, e.g. how it will be carried out, how any measurements are to be made, if needed, etc……I need help with all of them plz.
- An employee at the metropolitan museum of art surveyed a random sample of 150 visitors to the museum of those visitors 45 people bought food at the cafeteria based on those results how many people out of 1750 visitors to the museum would be expected to buy food from the cafeteria?please explain!Support for the U.S. death penalty for convicted murderers was 63% in 2014 (Gallup poll results 2018). In a recent survey of 150 randomly selected U.S. adults, 75 said they were in favor of the death penalty for those convicted of murder. Does this sample appear to come from a population with a lower proportion in favor of the death penalty? d) Say that a = 0.05, what does this mean. Explain in the context of the problem. e) What would it mean to make a type II error? Explain in the context of this problem. f) Use a 0.05 significance level to test the claim. State your conclusion AND interpret your results.
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- A study on the relationship between watching TV as a child and violent acts as an adult, researchers followed the TV viewing habits of children between 1 and 10 years old. Of these kids, 85 watched less than 1 hour of TV per day, 350 watched between 13 hours, and 280 watched more than 3 hours per day. Ten years later, researchers evaluated the kids to determine if they had a criminal record. The number of aggressive acts by these children in these categories were 8, 84, and 68, respectively. Draw a contingency table with these observed results in the space below. Insert a similar table for the Expected results of HO: The amount of TV watching and violence are not associated. In reference to the TV watching question above, what is the value of your test statistic for this statistical test you would choose? For the TV watching data above, which of the choices below best matches your interpretation of the results for this statistical test? Group of answer choices a) The results were…A personal trainer wanted to test the effectiveness of two different workout routines. She took a random sample of 70 of her clients and, in a random order, had them complete one of the two routines for two weeks. Then, after a one-month waiting period, she asked them to come back and do the other routine for two weeks. After each two-week period of the exercise routines, she measured their performance on a physical fitness aptitude test. She found the average difference in aptitude scores between the two routines for each client was 30.4 with a standard error of 3.2. What would be her 85% confidence interval for the average difference in the effectiveness of the two routines? (3 decimal places) ( , )A health officer thinks that there is an association between diabetes (DM) and hypertension (HPT). He believes that those with DM are more likely to have HPT as well. For his research, from the hospital records, he selected a random sample of 400 patients, 300 with DM and 100 without DM. Out of the 300 DM patients, 60 had HPT as well and out of the 100 non DM patients 10 had HPT. He also recorded the patients’ gender. With the data, he performed two analyses, one for all policyholders and the other by gender. The following are some of the output from SPSS. Must the manager consider gender as well in this case? If yes, stating the evidence, explain why. If you are the health officer, how would the results above help you in making decision? What other variables, if any, should be considered as well?