The Kaos delete method gives results that contain only cut and rotate errors O True O False
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- Do HomewOrk mathxl.com/Student/PlayerHomework.aspx?homeworkld%3D608090538&questionld3D1&flushed%=false&cld36669071¢erwin: MAT 1723 FA21 E Homework: Section 3.3 Subtraction of Whole Num... Question 20, Mathematic... Betsy found 518 – 49 = 469. She was not sure she was correct so she tried to check her answer by adding 518 + 49. How could you help her? Choose the correct answer below. O A. Betsy is checking her subtraction the correct way. O B. Betsy should add 518 + 469 to check her subtraction. O C. Betsy should add 469 + 49 to check her subtraction. O D. The only way to check subtraction is to do the original problem again. Textbook Ask My Instructor P Type here to searchA certain affects virus 0.8% of the population. A test used to detect the virus in a person is positive 88% of the time if the person has the virus (true positive) and 13% of the time if the person does not have the virus (false postive). Fill out the remainder of the following table and use it to answer the two questions below. (enter answer with no commas, i.e. as 1000 not 1,000.) Infected Not Infected Total Positive Test [a] [b] [c] Negative Test [d] [e] [f] Total 800 99,200 100,000 i) Find the probability that a person has the virus given that they have tested positive. (Round your answer to the nearest tenth of a percent and do not include a percent sign.)[g]_______ % ii) Find the probability that a person does not have the virus given that they test negative. (Round your answer to the nearest tenth of a percent and do not include a percent sign.)[h]________ %Find the median, first quartile (Q1) and the third quartile (Q3) for the data shown, which is already sorted. The number of data is n= 11. Katye Kozak's algorithm: Sort the data and compute the median. When n is an odd number, the median is the center value. When n is an even number, the median is the center value. After computing the median, Q1 is the median of the 1st half of the data, not including the median value. Q3 is the median of the 2nd half of the data, not including the median value. Do not round your answers. x 1.2 2.6 7.7 9.5 14 16.3 17.6 19.9 22.2 25.2 26.3 Median= Q1 = Q3 =
- A subset of a population selected to represent the population is a subset O sample small population None of the alternative answers is correct.Which of the following ensures a sample is representative of its population? The sample is convenient. The sample has properties that are matched to those in the population. The sample is the same size as the population. The sample is unique.A study with a factorial design always has: O Multiple dependent variables O Multiple independent variables O A single independent variable A single dependent variable
- In a study of pain relievers, 50 people were given product A, and all but 10 experienced relief. In the same study, 20 people were given product B, and all but 3 experienced relief. Fill in the blanks below to make the most reasonable statement possible. Product ▼(Choose one) performed worse in the study. That is because % failed to get relief with this product, whereas only % failed to get relief with Product ▼(Choose one).Let the temperature at 8 AM be the first sample, and the temperature at 12 AM be the second sample. Find the values of d overbar and s Subscript d. d overbar___ (Type an integer or a decimal. Do not round.) s Subscript d. (Round to 2 decimal places as needed.) In general, what does mu Subscript d represent?Two teachers had 30 of their students take a test. Teacher A found a mean of 78.6 with a SD-3.5 while teacher B found a mean of 77.3 and a SD-4.1. At the 97% level, test the opnion that class B is less than class A. 1. Is the test (A-Left Tailed, B-Right Tailed, C-2-Tailed) (separate with a comma if there are 2) 2. Critical Value 3. Test statistic 4. 3-decimal p-Value
- N2Scenario: Three persons underwent a swab for COVID-19 test. Let X represents the random variable number of positive results. Find the mean number of positive results from the three people who underwent a swab for COVID-19 test. Column 1 Column 2 (Multiply column 1 and 2) Column 3 Column 4 Square column 1 Column 5 (Multiply column 2 and 4) X P(X) X• P(X) X2 X² • P(X) 1 8 3 1 8 3 8. 1 3 8Teachers want to know which night each week their students are doing most of their homework. Most teachers think that students do homework equally throughout the week. Suppose a random sample of students were collected which shows that the Number of students doing their homework on SUN where 16 Number of students doing their homework on MON where 18 Number of students doing their homework on TUE where 12 Number of students doing their homework on WED where 18 Number of students doing their homework on THR where 8 Number of students doing their homework on FRI where 4 Number of students doing their homework on SAT where 3 What is the Test Statistics to test the Hull Hypothesis that students were doing their homework with equal frequencies (that is, they fit a uniform distribution) against the alternative Hypothesis that students prefer doing their homework on a particular day (that is, they do not fit a uniform distribution)?
