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Get answers and solutions for statistical analysis and geometry problems. Find probabilities, standard deviations, angle measures, and more.
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Question 1 - 10 • The class average on a test is 90% with a standard deviation of 2.7. How many standard deviations from the mean is someone who scores an 86.3%?
Answer 1 – 10 • 2 below the mean
Question 1 - 20 • What is the z score for a person who scores a 92% on a test when the mean is 89% and the standard deviation is 2.5?
Answer 1 – 20 • 1.2
Question 1 - 30 • The scores on the Statistics test in a Math 3 class typically have a mean of 80 and a standard deviation of 8.5. What is the probability that a randomly selected student will have a score between 71.5 and 88.5?
Answer 1 – 30 • 68%
Question 1 - 40 • The scores on the Statistics test in a Math 3 class typically have a mean of 80 and a standard deviation of 8.5. What is the probability that a randomly selected student will have a score between 78 and 85?
Answer 1 – 40 • 31.5%
Question 1 - 50 • The lengths of Atlantic croaker fish are normally distributed, with a mean of 10 inches and a standard deviation of 2 inches. An Atlantic croaker fish is randomly selected. Find the probability that the length of the fish is less than 7 inches
Answer 1 – 50 • 6.7%
Question 2 - 10 True or False? Angle Two and Six are congruent angles
Answer 2 – 10 • True
Question 2 - 20 True or False? Angle Three and Five are congruent angles
Answer 2 – 20 • False
Question 2 - 30 Angle One has a measure of 120 degrees. Which other angles have the same measure?
Answer 2 – 30 4, 5, and 8
Question 2 - 40 True or False? Angle A and Angle D are complimentary angles
Answer 2 – 40 • False
Question 2 - 50 The measure of Angle A = 2x + 7. If Angle B is equal to 30 degrees, what is the measure of angle C?
Answer 2 – 50 • 150
Answer 3 – 10 • 1.36
Answer 3 – 20 • 3
Answer 3 – 30 • 0.66
Answer 3 – 40 • 0.41
Question 4 - 10 What is x?
Answer 4 – 10 80 degrees
Question 4 - 20 What is the measure of arc AB?
Answer 4 – 20 • 68
Answer 4 – 30 • 46 degrees
Question 4 - 40 Find y
Answer 4 – 40 • 106 degrees
Answer 4 – 50 • 9
Question 5 - 10 • The directix of a parabola is located at y = 3 and the focus is located at (-4, 7). Find the vertex
Answer 5 – 10 • (-4, 5)
Answer 5 – 30 • Yes
Question 5 - 40 • What is the sine of a 480 degree angle? Give exact measurements.