A poll reports that 37% of Canadians download movies on their computers. The poll has a margin of error of 2.8%, 19 times out of 20. Choose the statement that best explains what this means.

A fast-food restaurant manager decides to collect data to see why people eat at her restaurant. She decides that for one Saturday, she will give out a free meal to anyone who fills out a survey. She announces the survey with posters in her restaurant. This is the survey: 1. How often do you come to this restaurant?     Once a month or less             2-3 times a month      1-2 times a week                   More than 2 times a week 2. What do you think about the food?     Excellent       Good       Fair       Poor 3. What do you think about the prices?     Excellent       Good       Fair       Poor The number of people who fill out the survey is about 20% of her weekly patrons. Why will the survey results be invalid?

A group of students has these heights, in centimetres: 163, 158, 163, 165, 164, 164, 159 What is the mean height?

Suppose the price of an item is now $122. Calculate the percent price increase from a base price of $113.

When performing mobile radiography to demonstrate joint spaces, if you have to choose, it is most important to keep the central ray:

Which image intensifier component is identified with the letter (A) in the following illustration?

Which of the following patient position adjustments would require the Automatic Brightness Control (ABC) to increase the exposure factors for a barium swallow fluoroscopy procedure? (Select two)

Which of the following is made by plants?

The surgeon is about to finish surgery on a mixed-breed dog. The surgical assistant counts 18 discarded sponges, but started with 20. Which of the following is the most appropriate next step for the surgical team to take?

During surgery, a veterinarian asks for a scalpel (with a blade on it).  The correct way to pass this instrument is: