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Visualize the “Ladder of Abstraction”. Please list what is at the top and bottom of the ladder and give three examples of the kinds of things located on the ladder.

There are 6 different books, and we select four books from them and assign to four people (each person gets one book). How many different ways do we have to select and assign ?

3D scatter plot is used to draw .. 

Factor polynomials completely.

What is the sample standard deviation of the following numbers? 7, 6, 5, 4, 2 (Round to 2 decimal places)

A preschool class has 7 students. Their heights, in inches, are: 36, 36, 37, 37, 40, 45, 49Tell me about the data. In other words, provide the descriptive statistics for this data. HINT: Your answer should be 4 specific sentences.

What is the probability that a guest pays more than $80 for a ticket? (2 decimal places)

Use the following information to answer the next 3 questions.An automatic machine inserts mixed vegetables into a plastic bag. Past experience revealed that 10% of packages were underweight and 90% of them had satisfactory weight. HINT: construct a probability tree to answer the questionsWeightProbabilityUnderweight0.100Satisfactory0.900

The Sedgwick County Zoo has 7 elephants. Their ages are: 1, 6, 7, 7, 8, 20, 44 years. Tell me about the ages of the elephants at the Sedgwick County Zoo over the next 3 questions.

A population consists of all the weights of all defensive tackles on a university’s football team. They are Johnson, 204 pounds; Patrick, 215 pounds; Junior, 207 pounds; Kendron, 212 pounds;Nicko, 214 pounds; and Cochran, 208 pounds. What is the population standard deviation (in pounds)? (Round to the nearest whole number)