MATH302 D011 Fall 2023 - APEI.pdf

1/17/24, 3:33 PM William Bridgeforth - MATH302 D011 Fall 2023 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=270921&ai=2954718&isInPopup=0&cfql=0&fromQB=… 1/10 Week 1 Test - Results Attempt 1 of 2 Written Dec 6, 2023 3:43 PM - Dec 6, 2023 3:51 PM Attempt Score 18 / 20 - 90 % Overall Grade (Highest Attempt) 18 / 20 - 90 % Question 1 1 / 1 point A market researcher polled every eighth person who walks into a grocery store. What type of sampling was used? Question 2 1 / 1 point What is the sampling method used in the following scenario? A teacher wants to know if her students are doing homework, so she randomly selects rows one and four and then calls on all students in row one and all students in row four to present the solutions to homework problems to the class. Cluster Stratified Simple Random Systematic Convenience convenience stratified cluster

1/17/24, 3:33 PM William Bridgeforth - MATH302 D011 Fall 2023 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=270921&ai=2954718&isInPopup=0&cfql=0&fromQB=… 2/10 Question 3 1 / 1 point What was the sampling method that was used in the scenario? A study was done to determine the age, the number of times per week, and the duration (amount of time) of residents using a local gym in San Antonio, Texas. The first car in the parking lot was selected randomly, and then the resident of every eighth car in the lot around the gym was interviewed. Question 4 1 / 1 point A group of test subjects is divided into 10 groups; then 3 of the groups are chosen at random. What type of sampling is used? Question 5 1 / 1 point An Excel generates 200 random numbers, and 200 people whose names correspond with the numbers on the list are chosen. What type of sampling was used? simple random systematic simple random cluster systematic stratified Cluster Convenience Stratified Systematic Simple Random Convenience

1/17/24, 3:33 PM William Bridgeforth - MATH302 D011 Fall 2023 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=270921&ai=2954718&isInPopup=0&cfql=0&fromQB=… 3/10 Question 6 1 / 1 point A local polling chapter is interested in the mean age of people who voted in the last election. They want to use this information to help get more people of all ages out to vote. Identify the sample. Question 7 1 / 1 point A local Polling chapter is interested in the proportion of people who voted in the last election. Identify the statistic. Question 8 1 / 1 point An APU instructor is interested in the mean number of days an APU statistic students are absent from class during a quarter. The instructor's sample produces a mean number of days absent of 5 days. This value is an example of a: Systematic Simple Random Stratified Cluster the population mean age of people who voted a subgroup of these voters all people who have voted the sample mean age of people who voted in the last election the proportion of the sample who voted in the last election all people (maybe in a certain geographic area, such as everyone in the state) a group of the people the proportion of all people who voted in the last election

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1/17/24, 3:33 PM William Bridgeforth - MATH302 D011 Fall 2023 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=270921&ai=2954718&isInPopup=0&cfql=0&fromQB=… 4/10 Question 9 1 / 1 point parameter statistic data variable Forbes magazine published data on the best small firms in 2012. These were firms which had been publicly traded for at least a year, have a stock price of at least $5 per share, and have reported annual revenue between $5 million and $1 billion. The table below shows the ages of the chief executive officers for the first 73 ranked firms. Age FrequencyRelative FrequencyCumulative Relative Frequency 40-44 4 45-49 3 50-54 15 55-59 20 60-64 21 65-69 8 70-74 2 Answer the following questions: What percentage of CEOs are 59 years or younger? Round your answer to the

1/17/24, 3:33 PM William Bridgeforth - MATH302 D011 Fall 2023 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=270921&ai=2954718&isInPopup=0&cfql=0&fromQB=… 5/10 ___ 57.5___ (33.3 %) ___ .1096___ (33.3 %) ___ 51___ (33.4 %) Hide ques±on 9 feedback Question 10 1 / 1 point Use the following information to answer the question: The (incomplete) table below contains data on hurricanes that have made direct hits on the U.S. Between 1851 and 2004. A hurricane is given a strength category rating based on the minimum wind speed generated by the storm. Frequency of Hurricane Direct Hits nearest tenth. % What is the relative frequency of ages 65 to 69? Round your answer to 4 decimal places What is the cumulative frequency for CEOs over 55 years in age? Round to a whole number. Do not include any decimals. 20+21 + 8 + 2 = 51

1/17/24, 3:33 PM William Bridgeforth - MATH302 D011 Fall 2023 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=270921&ai=2954718&isInPopup=0&cfql=0&fromQB=… 6/10 Category Number of Direct Hits Relative Frequency Cumulative Frequency 1 115 0.3758 0.3758 2 107 0.7255 3 65 4 15 0.0490 5 4 1.0000 Total=306 What is the relative frequency of direct hits that were category 3 hurricanes? Hide ques±on 10 feedback Question 11 1 / 1 point A population is: Not enough information to calculate 0.0490 0.2124 0.0131 Good job! a portion of the population under study. a characteristic of interest for each person or thing in the population.

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1/17/24, 3:33 PM William Bridgeforth - MATH302 D011 Fall 2023 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=270921&ai=2954718&isInPopup=0&cfql=0&fromQB=… 7/10 Question 12 1 / 1 point Round the following number to four decimal places. Make sure you include a zero in front of the decimal. 0.0637329287 ___ ___ Answer: 0.0637 Question 13 1 / 1 point You are collecting the same data and receive very different results from your participants. What should you do? Question 14 0 / 1 point Education and graduation rate statistics for 50 US states were collected from local high schools . One analysis of this data found a strong connection between education and income indicating that higher levels of education in a community correspond to lower income. Which of the potential problems with samples discussed below could explain this connection? the collection of all individuals, objects or measurements that can be made a number that is a property of the population. Ignore your results. Reevaluate your accuracy. Nothing, it is perfectly fine to have different samples. Average your scores with the participate mean. Undue Influence Causality

1/17/24, 3:33 PM William Bridgeforth - MATH302 D011 Fall 2023 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=270921&ai=2954718&isInPopup=0&cfql=0&fromQB=… 8/10 Question 15 0 / 1 point Round the fraction to 4 decimal places. ___ ___ Answer: 7.9069 (7.8837) Question 16 1 / 1 point What measurement scale is used in the following example? The colors of pencils in a Crayola Colored Pencil 50 count box Question 17 1 / 1 point What measurement scale is used in the following example? Level of Agreement: Yes, Maybe, No Self-selected samples Problems with samples Ordinal Ratio Interval Nominal Nominal

1/17/24, 3:33 PM William Bridgeforth - MATH302 D011 Fall 2023 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=270921&ai=2954718&isInPopup=0&cfql=0&fromQB=… 9/10 Question 18 1 / 1 point What measurement scale is used in the following example? Public Pool temperatures in the Summer months: 60, 65, 70, 75, 80, 85 Question 19 1 / 1 point What measurement scale is used in the following example? Ruler measurements Question 20 1 / 1 point What measurement scale is used in the following example? Color of your eyes. Ratio Ordinal Interval Ordinal Ratio Nominal Interval Nominal Ordinal Ratio Interval Ratio Nominal Ordinal Interval

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1/17/24, 3:33 PM William Bridgeforth - MATH302 D011 Fall 2023 - APEI https://myclassroom.apus.edu/d2l/lms/quizzing/user/quiz_submissions_attempt.d2l?isprv=&qi=270921&ai=2954718&isInPopup=0&cfql=0&fromQB… 10/10 Done

MATH302 D011 Fall 2023 - APEI

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