Math 221 week 4 quiz Study guides, Class notes & Summaries

MATH 221 Week 3 Quiz: Statistics for Decision-Making (v5) Question: (CO 1) A survey of 385 people who like wild sweaters found that 74% had a wild holiday sweater. What is the population and what is the sample? Question: (CO 1) The measurements of 100 products from the assembly line show that 99% are correct. Is this percentage a parameter or a statistic and why? Question: (CO 1) Classify the data of the number of customers at a restaurant. Question: (CO 1) The data set that lists the runs score...

MATH 221 Week 3 Quiz: Statistics for Decision-Making (v3) Question: (CO 1) A survey of 385 people who like wild sweaters found that 74% had a wild holiday sweater. What is the population and what is the sample? Question: (CO 1) The measurements of 100 products from the assembly line show that 99% are correct. Is this percentage a parameter or a statistic and why? Question: (CO 1) Classify the data of the number of customers at a restaurant. Question: (CO 1) The data set that lists the temperatur...

MATH 221 - Week 4 Quiz/MATH 221 - Week 4 Quiz.

MATH 221 Week 7 Quiz: Statistics for Decision-Making (v1) Question: (CO 4) From a random sample of 55 businesses, it is found that the mean time that employees spend on personal issues each week is 4 .9 hours with a standard deviation of 0.35 hours. What is the 95% confidence interval for the amount of time spent on personal issues? Question: (CO 4) If a confidence interval is given from 8.56 to 10.19 and the mean is known to … 9.375, what is the margin of error? Question: (CO 4) If the popula...

MATH 221 Week 3 Quiz: Statistics for Decision-Making (v1) Question: A survey of 128 DeVry statistics students found that 83% read the announcements each week. What is the population and what is the sample? Question: In asking all 359 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? Question: (CO 1) Classify the data of the top grossing movies for 2017: Question: (CO 1) The data that list...

Lab Overview Scenario/Summary Open the Week 4 Lab Document(Links to an external site.)Links to an external complete the lab for this week. All of the directions are included in the docum ent. The data for this lab is distributed by your professor. The document includes places where you need to input the answers. Any place where you see a gray box is where you need to put an answer. Deliverables Fill in the document, save it with your name in the title, and submit the document Required Software ...

MATH 221 Statistics for Decision-Making Week 5 quiz with all correct answers. 100% COMPLETE SOLUTION Document Content and Description Below 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 60-69 541 70 and over 527 If you created the probability distribution fo r 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...

MATH 221 Week 4 Quiz (100% Correct Answers)

(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...