You record the height, weight, gender, blood type and body temperature of 200 subjects in a clinical trial. The number of quantitative variables that you have recorded is:

A random sample of 12 patients in a certain hospital reported that the proportion of individuals with Blood Type A was 0.36.  This proportion (0.36) of patients with Blood Type A is a:

A group of social scientists are studying sexual behaviors. They conduct group interviews with college students and ask them to discuss some of their experiences. Because the questions are very personal, many of the participants are not honest with their responses. What type of bias is present here?

A certain researcher wants to know what proportion of all incoming PSU freshmen own a Macintosh computer. The names of all incoming freshmen are available in an Excel document and a random number generator is used to select a subset of 30 names. Those 30 students were contacted and asked if they own a Macintosh computer. In this research study, all incoming freshmen are the _____________________ and the 30 students who were contact are the ____________________. The percent of the 30 students who own a Macintosh is considered to the _________________.  

Can pleasant aromas help a student learn better? Two researchers believed that the presence of a floral scent could improve a person’s learning ability in certain situations. They had 22 people work through a pencil-and-paper maze six times, three times while wearing a floral-scented mask and three times wearing an unscented mask. The three trials for each mask closely followed one another. Testers measured the length of time it took subjects to complete each of the six trials. They reported that, on average, subjects wearing the floral-scented mask completed the maze more quickly than those wearing the unscented mask, although the difference was not statistically significant. This study is:

Identify the variable hair color as:

Which histogram displayed as a larger class width?

Evaluate∫dxx3x2−4. Simplify your answer. You must show all your work for full credit.

A marketing company offers to pay $25 to the first 100 persons who respond to their advertisement and complete a questionnaire regarding displays of their client’s product. This situation is an example of which of the following?

Consider the following statement concerned with the collection of data, and determine the best selection of terms to complete the statement:  “The unknown value of the variable in a population is called the _______________. In order to determine an estimate known as the _______________, we draw a ____________ from the population.”