Math 221 week 3 quiz - Study guides, Class notes & Summaries

MATH 302 Final Exam QUESTIONS & ANSWERS 2022 UPDATE - American UniversityMATH 302 Final Exam 2022 - American University QUIZ 1 Question 1 of 20 1.0/ 1.0 Points Which of the following statements are false regarding a boxplot? A. The height of the box has no significance. B. Boxplots can be used to either describe a single variable in a data set or to compare two (or more)variables C. The length of the box equals the range of the data. D. The right and left of the box are the t...

Question: (CO 3) The speed of cars on a stretch of road is normally distributed with an average 48 miles per hour with a standard deviation of 5.9 miles per hour. What is the probability that a random ly selected car is violating the speed limit of 50 miles per hour? Question: (CO 3) A survey indicates that shoppers spend an average of 22 minutes with a standard deviation of 16 minutes in your store and that these times are normally distributed. Find the probability that a randomly selected shop...

MATH 221 Week 5 Quiz: Statistics for Decision-Making Question 1 2 / 2 pts (CO 4) Consider the following table: Age Group Frequency 18-29 983 30-39 784 40-49 686 50-59 632 60-69 54 1 70 and over 527 If you created the probability distribution for these data, what would be the probability of 40-49? 0.237 0.425 0.189 Correct! 0.165 Question 2 2 / 2 pts (CO 4) Consider the following table of hours worked by part-time employees. These employees must work in 5 hour blocks. Weekly hours worked Probabil...

1. Question: (TCO 1) What method of data collection would you use to collect data for a study where a political pollster wishes to determine if his candidate is leading in the polls? Your Answer: use a simulation perform a an experiment take a census use sampling ( a subset of the population is obtained; Chapter 1 ) CORRECT Points Received: 5 of 5 2. Question: (TCO 2) There is a relationship between smoking cigarettes and getting emphysema. This statement describes Your Answer: in...

Question 1 2 / 2 pts Let x represent the number of cars in a parking lot. This would be considered what type of variable: Homework Help: 3DA. Discrete versus continuous variables (Links to an external site.) (DOCX) Lagging Continuous NonsensicalCorrect! Discrete Question 2 2 / 2 pts Let x represent the number of players on a sports field. This would be considered what type of variable: Homework Help: 3DA. Discrete versus continuous variables (Links to an external site.) (DOCX) Co...

(TCO 6) In the standard normal distribution, the standard deviation is always Student Answer: 0 1 2 none of these 2. Question : (TCO 6) The area under a normal curve with mu = 8 and sigma = 3 is Student Answer: 0 1 2 none of these 3. Question : (TCO 6) If Larry gets a 70 on a physics test where the mean is 65 and the standard deviation is 5.8, where does he stand in relation to his classmates? Student Answer: He is in the top 10%. He is in the top 20%. He is i...

(TCO 6) In the standard normal distribution, the standard deviation is always Student Answer: 0 1 2 none of these 2. Question : (TCO 6) The area under a normal curve with mu = 8 and sigma = 3 is Student Answer: 0 1 2 none of these 3. Question : (TCO 6) If Larry gets a 70 on a physics test where the mean is 65 and the standard deviation is 5.8, where does he stand in relation to his classmates? Student Answer: He is in the top 10%. He is in the top 20%. He is in the bottom 20%. He is in the botto...

Question 1 2 / 2 pts Let x represent the number of cars in a parking lot. This would be considered what type of variable: Homework Help: 3DA. Discrete versus continuous variables (Links to an external site.) (DOCX) Lagging Continuous NonsensicalCorrect! Discrete Question 2 2 / 2 pts Let x represent the number of players on a sports field. This would be considered what type of variable: Homework Help: 3DA. Discrete versus continuous variables (Links to an external site.) (DOCX) Correct! Discrete ...