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Prealgebra
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10 Nov 2019
Choose the best estimate from the list, 107/405 is approximately 1/16,1/8, 1/4, 1/2. 1/2 1/16 1/8 1/4 5111/2068 is approximately 1 1/2, 2 1/2, 2,3. 2 3 2 1/2 1 1/2 3 11/32 + 10 21/62 is approximately 13, 13 1/3, 13 2/3, 14. 13 1/3 13 14 13 2/3
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24 Nov 2023
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Write using exponential notation. 17 middot 17 middot 17 middot 17 A 17^4 B) 4 middot 17 C) 17^1 D) 4^17 8 middot 8 middot 6 middot 6 middot 6 middot 6 middot 7 A) 8^2 middot 6^4 middot 7 B) 2^8 middot 4^6 middot 1^7 C) (8 middot 6 middot 7)^7 D) 8 middot 6 middot 7^7 Evaluate. 5^2 A) 10 B) 36 C) 25 D) 32 1^3 A) 1 B) 2 C) 3 D) 4 2^7 A) 256 B) 14 C) 128 D) 49 2 middot 4^3 A) 128 B) 512 C) 24 D) 162 Simplify. -4^3 A) 64 B) -1 C) -12 D) -64 (-2)^5 A) -32 B) 3 C) -10 D) 32 -(-4)^3 A) -1 B) 64 C) -64 D) -12 10 middot 9 + 3 middot 4 A) 210 B) 372 C) 480 D) 102 (13 +12) middot (13 - 5) A) 116 B) 200 C) 109 D) 164 16 + 24 + 2/2^2 A) 7 B) 16 C) 5 D) 19 10^2 - 2 middot 5 A) 490 B) 400 C) 320 D) 90
Let S be the universal set, where: S = {1, 2, 3, ..., 18, 19, 20} Let sets A and B be subsets of S, where: Set A = {1, 5, 7, 11, 12, 14, 19, 20} Set B = {1, 4, 5, 7, 8, 10, 13, 14, 15, 19, 20} Find the following: LIST the elements in the set (A union B): (A union B) = Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE LIST the elements in the set (A intersection B): Enter the elements as a list, separated by commas. If the result is the empty set, enter DNE
Choose 5 of the variables and create a bar chart with the results for each variable - 5 bar charts Choose 5 different variables and create pie graphs for each of these 5 variables - 5 pie charts For the variable of age, create a "grouped" bar chart using the age groupings as follows. Count how many ages are in each of these groups and then create a bar chart for this data. Choose any 3 numeric variables and find the mean, median and standard deviation for each of these variables. Choose any 3 non-numeric variables and find the mode of each of these variables. Include a brief statement as to what the mode is telling you about that variable and the class response to it. Choose any 5 variables and find the simple probability of an event. For example, suppose we had a variable of car color and there were 15 white car owners, 10 blue car owners and 3 red car owners. Then the probability that a person from the class had a blue car would be P(blue car) = 10/28 = .357 Choose any 3 variables and compute "OR" probabilities. For example, if we had the car color example, you could have this as an example P (blue car OR red Car) = 10/28 + 3/28 = 13/28 = .464 8. Choose any 3 sets of 2 variables and compute "AND" probabilities. For these you must make sure that the variables are independent. So, for this one you could not use the 2 questions, have you traveled outside of the country and if so, how many countries have you visited. You could not use these 2 together, as they are not independent. For example, suppose in addition to the car color data we also had a variable for dog owners. Let's say we found 12 dog owners and 16 non dog owners. So an AND probability could be P (person has red car AND is a dog owner) = 3/28 middot 12/28 = .0459 Which of the variables gave you the most interesting results? Why
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