If a researcher is given a list of all 51,000 students that go to the university and each student has a 10% chance of being selected to participate in the study, what type of sampling has occurred?

Ethnicity of USF students is

It is known that the population standard deviation of weight among females is 30. Assuming that we have a random sample of 210 and a sample mean of 127, what would be your 90% confidence interval estimate of the population mean weight?

3 students apply to a PhD program.  The program rejects 25% of all applicants.  Students are accepted and rejected independently of each other.  Let the random variable X represent the number of the 3 students who get rejected into the PhD Program.   What is the probability that 1 student is rejected to the program if it is known that at fewer than 2 students will be rejected? (round your answer to 4 decimal places) (Hint: Binomial distribution with P=25% and n=3, and conditional probability)

Select the term that best fits this definition: This equals the expected value of a sample proportion for a sampling distribution

What is the clinical name of a probability that is used to determine the likelihood of someone having a positive test when it is known they do have the disease.

Type of college a student is enrolled in at USF (i.e., Public Health, Nursing, etc.) is

3 students apply to a PhD program.  The program accepts 65% of all applicants.  Students are accepted and rejected independently of each other.  Let the random variable X represent the number out of the 3 students who get accepted from the PhD Program. (Hint: Binomial distribution with n=3 and p=65%)   What is the mean of the random variable?  (round your answer to 4 decimal places)

What is the clinical name of a probability that is used to determine the likelihood of someone having a negative test when it is known they do have the disease.

A sample of 2500 patients were taken to assess a medical test.  27% of the sample have the disease, 563 patients have the disease and tested negative, and 235 patients do not have the disease and tested negative. What is the probability someone has the disease if it is known they have a positive test?  (round your answer to 4 decimal places)