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

MATH 302 Final Exam 2022 - American University | RATED A+MATH 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 third and first qu...

MATH 221 Week 5 Quiz (v3) Question: (CO 3) Consider the following table. If you … the probability distribution for these data, what would … the probability of 30-39? Question: (CO 3) Consider th e following table of hours worked by part-time employees. These employees must work in 5-hour blocks. Find the mean of this variable. Question: (CO 3) Consider the following table. Find the variance of this variable. Question: (CO 3) Consider the following table. Find the standard deviation of this v...

MATH 302 Final Exam QUESTIONS & ANSWERS 2022 UPDATE - American University MATH 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...

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: (CO 1) Among 500 people at the concert, a survey of 35 found 28% found it too loud. What is the population and what is the sample? 2. Question: (CO 1) In asking all 349 second graders in a school district, it is found that on average, these second graders have 2.5 pets. Is this number a parameter or a statistic and why? 3. Question: (CO 1) Classify the data of all the political parties in the world. 4. Question: (CO 1) The data set that lists the temperatures in Albany, NY each d...

1. Question: (CO 3) Consider the following table: If you created the probability distribution for these data, what would be the probability of 50-59? 2. Question: (CO 3) Consider the following table of hours worked by part- time employees. These employees must work in 5 hourblocks. Find the mean of this variable. 3. Question: (CO 3) Consider the following table: Find the variance of this variable. 4. Question: (CO 3) Consider the following table: Find the standard deviation of this variable...

MATH 221 Week 3 QUIZ 2

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...