Quizzes - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University

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11/28/23, 12:11 AM Aidan Veloso - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University https://elearning.wmich.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=566919&isprv=&qi=504953&cfql=0&dnb=0&fromQB=0&inP… 1/11 Homework 14 1 2 Your work has been saved and submitted Written Nov 28, 2023 3:06 AM - Nov 28, 2023 3:13 AM • Attempt 2 of 2 Attempt Score 14 / 14 - A Overall Grade (Highest Attempt) 14 / 14 - A Question 1 1 / 1 point For each of the following variables, identify the level of measurement (nominal, ordinal, interval, or ratio). (I) Traffic congestion (e.g. light, medium, heavy) (II) Temperature (in Fahrenheit) of an office building
11/28/23, 12:11 AM Aidan Veloso - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University https://elearning.wmich.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=566919&isprv=&qi=504953&cfql=0&dnb=0&fromQB=0&inP… 2/11 Question 2 1 / 1 point For each of the following variables, identify the type of variable (categorical vs. numeric). (I) Income tax brackets (e.g. Below $8925, $8925-36250, $36250-$87850, etc) (II) Temperature (in Fahrenheit) of an office building Question 3 1 / 1 point 1) (I) Ordinal , and (II) Nominal 2) (I) Ordinal , and (II) Interval 3) (I) Nominal , and (II) Ratio 4) (I) Ratio , and (II) Interval 5) (I) Ratio , and (II) Ratio 1) (I) Categorical , and (II) Categorical 2) There is no correct match. 3) (I) Numeric , and (II) Numeric 4) (I) Numeric , and (II) Categorical 5) (I) Categorical , and (II) Numeric
11/28/23, 12:11 AM Aidan Veloso - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University https://elearning.wmich.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=566919&isprv=&qi=504953&cfql=0&dnb=0&fromQB=0&inP… 3/11 Choose the description which best describes the shape of this boxplot. Question 4 1 / 1 point The five-number summary for a dataset on Temperature is given in the table below. Using this information, calculate the percent of values between 18.8 and 59.4. 1) Contaminated 2) Symmetric 3) Bimodal 4) Left-skewed 5) Right-skewed
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11/28/23, 12:11 AM Aidan Veloso - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University https://elearning.wmich.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=566919&isprv=&qi=504953&cfql=0&dnb=0&fromQB=0&inP… 4/11 Question 5 1 / 1 point The lifespans (in years) of ten beagles were 10; 9; 14; 12; 8; 13; 9; 10; 11; 11. Calculate the mean of the dataset. Hide ques±on 5 feedback 1) 100% 2) 0% 3) 50% 4) 75% 5) 25% 1) 1.89 2) 107 3) 10.5 4) 10 5) 10.7 Correct!
11/28/23, 12:11 AM Aidan Veloso - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University https://elearning.wmich.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=566919&isprv=&qi=504953&cfql=0&dnb=0&fromQB=0&inP… 5/11 Question 6 1 / 1 point Ten students took a statistics final and their scores were 83.9; 80; 77.7; 84.5; 79.9; 77.4; 93.1; 88.9; 82; 69. Calculate the standard deviation of the dataset. Hide ques±on 6 feedback Question 7 1 / 1 point Suppose that the middle 95% of speeding ticket fines on a highway fall between 70.42 and 134.14. Give an approximate estimate of the standard deviation of the speeding ticket fines. Assume the fine amount has a normal distribution. 1) 816.4 2) 81.64 3) 81 4) 6.637 5) 6.296 Correct! 1) 7.965 2) 15.93
11/28/23, 12:11 AM Aidan Veloso - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University https://elearning.wmich.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=566919&isprv=&qi=504953&cfql=0&dnb=0&fromQB=0&inP… 6/11 Hide ques±on 7 feedback Question 8 1 / 1 point Suppose that the mean and standard deviation of the scores on a statistics exam are 78.5 and 6.35, respectively, and are approximately normally distributed. Calculate the proportion of scores above 59. Hide ques±on 8 feedback 3) 31.86 4) 102.28 5) -15.93 Correct! 1) 0.7488 2) 0.9989 3) We do not have enough information to calculate the value. 4) 0.2512 5) 0.0011 Correct!
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11/28/23, 12:11 AM Aidan Veloso - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University https://elearning.wmich.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=566919&isprv=&qi=504953&cfql=0&dnb=0&fromQB=0&inP… 7/11 Question 9 1 / 1 point If the scores per round of golfers on the PGA tour are approximately normally distributed with mean 65.9 and standard deviation 1.73, what is the probability that a randomly chosen golfer's score is below 65 strokes? Hide ques±on 9 feedback Question 10 1 / 1 point A certain list of movies were chosen from lists of recent Academy Award Best Picture winners, highest grossing movies, series movies (e.g. the Harry Potter series, the Spiderman series), and from the Sundance Film Festival and are being analyzed. The mean box office gross was $138.64 million with a standard deviation of $11.2526 million. Given this information, 98.49% of movies grossed greater than how much money (in millions)? Assume the distribution is approximately normal. 1) 0.1685 2) 0.6985 3) We do not have enough information to calculate the value. 4) 0.3015 5) 0.8315 Correct!
11/28/23, 12:11 AM Aidan Veloso - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University https://elearning.wmich.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=566919&isprv=&qi=504953&cfql=0&dnb=0&fromQB=0&inP… 8/11 Hide ques±on 10 feedback Question 11 1 / 1 point Suppose that the distribution of income in a certain tax bracket is approximately normal with a mean of $44,198.21 and a standard deviation of $4,247.693. Approximately 29.99% of households had an income less than what dollar amount? 1) We do not have enough information to calculate the value. 2) 114.25 3) 135.81 4) 163.03 5) 413.09 Correct! 1) 9,422,694 2) 41,969.5 3) 9,511,090 4) We do not have enough information to calculate the value.
11/28/23, 12:11 AM Aidan Veloso - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University https://elearning.wmich.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=566919&isprv=&qi=504953&cfql=0&dnb=0&fromQB=0&inP… 9/11 Hide ques±on 11 feedback Question 12 1 / 1 point Apple's market share in the smart phone market represents a proportion of 0.1625. If Apple conducts a survey nationwide of 533 smart phone users, what is the probability that less than 84 of the people are Apple users? Hide ques±on 12 feedback Question 13 1 / 1 point 5) 46,426.93 Correct! 1) 0.4069 2) 0.6383 3) 0.3617 4) 0.0226 5) 0.0452 Correct!
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11/28/23, 12:11 AM Aidan Veloso - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University https://elearning.wmich.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=566919&isprv=&qi=504953&cfql=0&dnb=0&fromQB=0&in… 10/11 According to a survey conducted by Deloitte in 2017, 0.4532 of U.S. smartphone owners have made an effort to limit their phone use in the past. In a sample of 90 randomly selected U.S. smartphone owners, what is the probability that between 37 and 39 (inclusively) will have attempted to limit their cell phone use in the past? Hide ques±on 13 feedback Question 14 1 / 1 point Fill in the blanks. Suppose the probability at a light bulb factory of a bulb being defective is 0.14. If a shipment of 127 bulbs is sent out, the number of defective bulbs in the shipment should be around __________, give or take __________. Assume each bulb is independent. 1) 0.6376 2) 0.7883 3) 0.1404 4) 0.2117 5) 0.0278 Correct! 1) 17.78 , 15.29 2) 127 , 3.9103
11/28/23, 12:11 AM Aidan Veloso - STAT-2160-950 - Business Statistics - Elearning - Western Michigan University https://elearning.wmich.edu/d2l/lms/quizzing/user/attempt/quiz_start_frame_auto.d2l?ou=566919&isprv=&qi=504953&cfql=0&dnb=0&fromQB=0&in… 11/11 Hide ques±on 14 feedback Done 3) 3.9103 , 17.78 4) 17.78 , 3.9103 5) 17.78 , 0.14 Correct!

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Ims.jazanu.edu.sa/bbcswebdav/pid-796204-dt-content-rid-22853746 1/courses/362MATH-3 31_08768 01 501 20212/032%281%29 doz view-source:https://.. 9 Google bily YouTube Gmail M Junalg ul 100% 1 / 1 | An automobile weighing 4500 lb is driven down a 5° incline at a speed of 60 mi/h when the brakes are applied, causing a constant total braking force (applied by the road on the tires) of 1800 lb. Determine the distance trav- eled by the automobile as it comes to a stop. 5°
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