Exam 1: Basic Ideas

A small brew pub sent out questionnaires to a simple random sample of 250 customers asking whether they would like the brewery to include an imperial stout in their regular offerings. Of the 250 questionnaires, 12 were returned and 10 of those were in favor of including the stout. Specify The type of bias involved.

In a randomized experiment, if there are large differences in outcomes among the treatment groups, we can conclude that the differences are due to _____________________.

In a recent poll, 64% of the respondents supported stricter gun laws. Is this an example of statistic or a parameter?

A middle school student passes out leaflets to the adults at a school function. The leaflets ask the recipient to indicate whether they believe in anthropogenic global warming. The bottom of the Leaflet indicates that the completed leaflet should be returned to the student. Identify the kind of Sample that is being used.

Determine which of the following describes quantitative data. i. the length of an object in feet ii. the speed of an object in meters per second iii. the number of objects that are blue

A radio talk show invites people to call in and state whether or not they think that sexual harassment in the work place is a common problem.

An electronics manufacturer test every 50th cell phone to verify that it is functioning properly. Identify the kind of sample that is being used.

In a small town, 84% of the residents, aged 16 or more years old, own a car. Is this an example of statistic or a parameter?

Which of the following sample types should you always regard as unreliable?

The names of all 126 students in a professor's class are written on identical slips of paper, and the slips are placed into a large glass jar. Then, the professor selects 14 random slips from the jar. Identify the kind of sample that is being used.

Determine which of the following describes nominal data. i. My favorite days of the week are Friday, Saturday, and Tuesday. ii. My favorite day of the week is Friday, my second-favorite is Saturday, and Third-favorite is Tuesday.

The question... "Do you favor a higher standard of living, even though it produces unclean air and water?".. is an example of ...

Which one of the following data are continuous?

Determine which of the following describes nominal data. i. Michaelangelo's sells small, medium, large, and jumbo pizzas. ii. Michaelangelo's most-requested toppings are pepperoni, black olives, and mushrooms.

Which of the following is the best description of a double-blind experiment?

Choose the answer below that best completes the following statement. A ________ is a number that describes a population.

Determine which of the following describes quantitative data. i. the name of a chemical sample ii. the mass of a chemical sample iii. the color of a chemical sample

An experiment that tends to overestimate or underestimate the true value is said to be ______________.

A sign in a grocery store claims that 92% of their customers believe them to have the freshest produce in the city. Specify the type of bias involved.