Environment Requirements A reliable internet connection is required for quizzes and exams. You are required to complete a webcam scan of your workspace where you will take the quiz or exam each time you take a proctored quiz or exam. A “workspace” is defined as your desk or tabletop, the walls that you are facing and next to you, including the monitor screen.  Workspace Scan Tutorial Video No other person is allowed to be in the same room while you are taking the proctored quiz or exam. The lighting in the room must be bright enough to be considered “daylight” quality. Overhead lighting is recommended. If overhead lighting is not available, the source of light must not be behind you. Webcam should be focused on the test taker and placed on a stable surface so that it will have a steady and uninterrupted view of the test taker.  Both of your hands must remain fully in view of the camera the entire time (except for the short time you are answering questions or switching between questions on Canvas). See the YouTube video below. Your microphone must remain turned on at all times. Sit at a clean desk or table. No writing on the desk or walls around you. The room should be as quiet as possible; hence no music or television will be permitted. No headphones or earbuds are allowed. You must not have listening devices in your ears. No wearing anything on your head — such as hats or hoodies that cover your ears. No smart glasses are allowed. The following items are not allowed to be on your desk or used during your proctored quiz or exam: Books Textbooks Notebooks Phones and other devices TI-84 Plus or TI-83 Plus is allowed on your tabletop to use. Your calculator must be at least partially in view of the camera at all times. The textbook Formula/Table card will be attached at the end of your quiz/exam for you to use. This Formula/Table card can be found in MyLab and Mastering, click on the left tab bar “Video & Resource Library,” click on “Learning Tools,” and in the middle of the page, under “Review,” you will see a link “View the Formula/Table Card from your textbook.” A blank 8.5” by 11” paper and pencil may be used for the purpose of scratch work only. You are not allowed to copy the questions of the quiz or exam on this piece of paper. If you choose to use a scratch paper, you must show this paper front and back in front of the webcam when you are asked to scan your desk and walls. Right after you complete the exam, you must show the used scratch paper front and back in front of the webcam before ending your quiz or exam. Please be aware that repeated exiting and restarting of an exam in Honorlock can appear unusual in the system and may be flagged as academic dishonesty.  Honorlock records all activity and any activity that seems out of the ordinary may be reviewed.  While I understand that occasional technical issues may happen, students should plan to complete their exam in one session without exiting Honorlock. If you do not follow the above rules your exam may not be scored and receive a grade of zero. NOTE: If you cannot meet these environment requirements or you are in a non-ideal environment, contact your professor.  

The lengths of pregnancies for tigers is normally distributed with a mean of 100 days with a standard deviation of 9 days,  Find the following: a.  What is the probability that a randomly selected tiger will have a pregnancy that last less than 94 days? Round your answer to 4 decimal places. b.  If we take a random sample of 7 tigers, what is the probability that the mean length of their pregnancies will last less than 94 days? Round your answer to 4 decimal places. c. What length (number of days) of pregnancy for a sample of 7 tigers would correspond to the 95th percentile for the mean length of tiger pregnancies’ for a sample of 7? Round your answer to 2 decimal places.

According to the American Time Use Survey done in 2016, the typical American spent an average 145.1 min per day on social media.  A polling agency thinks this number has increased, a survey of 41 Americans resulted in a mean 155.3 minutes per day on social media with a standard deviation of 46.5 minutes.  Conduct the appropriate hypothesis test to determine if Americans spend more time using social media now than in 2016. Let α = 0.05 significance level. a.  

Pass rates for Intermediate Algebra at a community college are 53.6%.  In an effort to improve the course, faculty of a community college develop a mastery-based learning model where course content is delivered is through a computer program.  The instructor serves as a learning mentor for the students in the course.  Of the 480 students who enrolled on the mastery-based course, 275 did pass.  At the 0.05 level of significance, decide whether the sample evidence suggests that the mastery-based learning model improved pass rates. a. What is your hypotheses (see above choices) b.  What is your test statistic? c.  What is your p-value or critical values and what is your conclusion? Briefly explain as in, I reject Ho because….. or I do not reject Ho because….. d.  Write a conclusion sentence in the context of the problem. e.  What type of error could you have made? Briefly explain.

A survey of 2500 adult Americans aged 18 and older conducted by Harris Interactive found that 580 have donated blood in the past two years. Construct a 95% confidence interval for the population proportion of adult American who have donated blood in the past two years.   Round your answer to 3 decimal places. Lower bound: Upper bound:

According to an Almanac, 80% of teens have tried smoking or vaping.   a.  If 600 teens are randomly selected, how many would we expect to have tried smoking or vaping? That is what is the mean number of teens you would expect to have tried smoking or vaping? b.  What is the standard deviation for the number of teens in a sample of 600 who have tried smoking or vaping? Round your answer to 2 decimal places. c.  Use the following words to fill in the blanks  “be” or “not be” and “is” or “is not” , you do not need to use the ” symbols.  It would  unusual for 200 teens to have tried vaping, because 200 with 2 standard deviations of the mean

The American Federation of Teachers, publishes an annual salary report. In 2003, a sample of 51 teachers in California had mean salary with $56, 690 and a standard deviation of $9,000.  In Michigan of the same year, the mean salary for 61 teachers was $52, 000 with a standard deviation of $6000.  Test the hypothesis that the mean salary of teachers in California is greater than the mean salary of the teachers in Michigan.  Use a 0.05 significance level. We will assume that the California teachers are group 1.   a.

Given the following table on the number of shows you have watched on Netflix in a week: Round your answers to 2 decimal places for all numeric answers x = number of Netflix shows watched per week P(x) 0 0.06 1 0.32 2 0.25 3 0.11 4 0.12 5 0.10 6 0.04 a.  What is the mean for the number of netflix shows watched per week? b. What is the standard deviation of the number of netflix shows watched per week? c.  Using the table above, what is the probability that a person watches exactly 3 Netflix shows per week? d. Using the table above, what is the probability that a person watches 3 or 4 Netflix shows per week? e.  If you pick 100 people, how many of them would you expect to watch 3 or 4 Netflix shows per week?

Fill in the following table: Variable Continuous, Discrete or NA Nominal, Ordinal, Interval, Ratio Temperature  of a car to the nearest 10th of a degree Number of cars on a lot Brand of the car Size of the car (Small, medium,..)

Environment Requirements A reliable internet connection is required for quizzes and exams. You are required to complete a webcam scan of your workspace where you will take the quiz or exam each time you take a proctored quiz or exam. A “workspace” is defined as your desk or tabletop, the walls that you are facing and next to you, including the monitor screen.  Workspace Scan Tutorial Video No other person is allowed to be in the same room while you are taking the proctored quiz or exam. The lighting in the room must be bright enough to be considered “daylight” quality. Overhead lighting is recommended. If overhead lighting is not available, the source of light must not be behind you. Webcam should be focused on the test taker and placed on a stable surface so that it will have a steady and uninterrupted view of the test taker.  Both of your hands must remain fully in view of the camera the entire time (except for the short time you are answering questions or switching between questions on Canvas). See the YouTube video below. Your microphone must remain turned on at all times. Sit at a clean desk or table. No writing on the desk or walls around you. The room should be as quiet as possible; hence no music or television will be permitted. No headphones or earbuds are allowed. You must not have listening devices in your ears. No wearing anything on your head — such as hats or hoodies that cover your ears. No smart glasses are allowed. The following items are not allowed to be on your desk or used during your proctored quiz or exam: Books Textbooks Notebooks Phones and other devices TI-84 Plus or TI-83 Plus is allowed on your tabletop to use. Your calculator must be at least partially in view of the camera at all times. The textbook Formula/Table card will be attached at the end of your quiz/exam for you to use. This Formula/Table card can be found in MyLab and Mastering, click on the left tab bar “Video & Resource Library,” click on “Learning Tools,” and in the middle of the page, under “Review,” you will see a link “View the Formula/Table Card from your textbook.” A blank 8.5” by 11” paper and pencil may be used for the purpose of scratch work only. You are not allowed to copy the questions of the quiz or exam on this piece of paper. If you choose to use a scratch paper, you must show this paper front and back in front of the webcam when you are asked to scan your desk and walls. Right after you complete the exam, you must show the used scratch paper front and back in front of the webcam before ending your quiz or exam. Please be aware that repeated exiting and restarting of an exam in Honorlock can appear unusual in the system and may be flagged as academic dishonesty.  Honorlock records all activity and any activity that seems out of the ordinary may be reviewed.  While I understand that occasional technical issues may happen, students should plan to complete their exam in one session without exiting Honorlock. If you do not follow the above rules your exam may not be scored and receive a grade of zero. NOTE: If you cannot meet these environment requirements or you are in a non-ideal environment, contact your professor.