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When using imagery training, it involves which of the following?

Classify the following study as being observational or experimental.Give one group of people a diet supplement and another a placebo. After both groups have been on the same meal program for one month, compare the weight losses of both groups.

Identify the sample by naming the sampling technique used.Take a sample of five Zip codes from the Chicago metropolitan region and use all the elementary schools from each of the Zip code regions. Determine the number of students enrolled in first grade in each of the schools selected.

Refer to problem 29. The cumulative frequencies, in order, are:

Choose the highest level of measurement.Ages of children enrolled in a daycare.

Classify the following variable as discrete or continuous.The number of pizzas sold by Pizza Pasta in the last month.

Suppose that , and is continuous.  Which of the following would guarantee that is a local minimum value of

Identify the sample by naming the sampling technique used.Survey five friends regarding their opinion of the student cafeteria.

You are designing an aquarium in the shape of a rectangular prism. The base is square (with side length feet), and the volume must be 400 cubic feet. The material for the top and bottom costs $10 per square foot, and the glass for the sides costs $4 per square foot. What is the total cost (in dollars) of the box in terms of the length of  the base length ?    

Identify the sample by naming the sampling technique used.Divide the users of the computer online service Internet into different age groups and then select a random sample from each age group to survey about the amount of time they are connected to the internet each month.