Explain why the answer is C. Which of the following is not a main goal of biostatistics in research practice? Improve the intellectual content of data reported from a trial/study. Rely on statistical tests to assess validity of a study. Report only those results which indicate influential observations. Organize data into understandable forms.

Use the table to answer the questions.  Compute the prevalence of true diabetes in this population.  Compute the sensitivity of the test. Explain in words what your sensitivity answer means. (Do not just write the definition; include your result!) Compute the specificity of the test.  Explain in words what your specificity answer means. (Do not just write the definition; include your result!) Compute the positive predictive value of the test. Explain in words what your positive predictive value answer means. (Do not just write the definition; include your result!)

How do you know which test/procedure to use given a particular research design or study? What matters and how? Why?

Tourism is extremely important to the economy of Florida. Hotel occupancy is an often-reported measure of visitor volume and visitor activity (Orlando Sentinel, May 19, 2018). Hotel occupancy data for February in two consecutive years are as follows. Current Year 1,476 1,800 Occupied Rooms Total Rooms 1,422 1,800 a. Formulate the hypothesis test that can be used to determine whether there has been an increase in the proportion of rooms occupied over the one-year period. Let P₁= population proportion of rooms occupied for current year P2 population proportion of rooms occupied for previous year - P2 less than or equal to 0 greater than 0 Ho P1 Ha P1 P2 b. What is the estimated proportion of hotel rooms occupied each year (to 2 decimals)? Current year .80 X Previous Year .77 c. Conduct a hypothesis test. What is the p-value (to 4 decimals)? Use Table 1 from Appendix B. Previous Year p-value = 0.0166 Using a 0.05 level of significance, what is your conclusion? We can conclude that there…

Suppose the observational units in a study are the patients arriving at an emergency room on a given day, Nov 11, 2019.  Number of patients that arrive before noon     is a qualitative variable       is a quantitative variable       is not a variable

Please read the article and answer the following questions thanks

1 a) Hair color is an True False example of a qualitative data.

2. Explain the relationship between the population mean ?, the sample mean?̅, and a value of the sample mean ?̅. Which is the population parameter,which is a statistic, which is a point estimate, and which is an estimator?

True or false? The mean is the best measure of central tendency for a data set where they are no outliners present.