Central High School is a very large school with lots of boys and girls. Three students are to be chosen to have breakfast with the principal. Which sample space is correct in finding the probability that exactly one of the students chosen is female? A. {0, 1, 2, 3}; 1/4 B. (0.5, 0.5); 1/2 O C. (1, 2, 3}; 1/3 D. {GGG, GGB, GBG, BGB, GBB, BGG, BBG, BBB}; 3/8
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- Which of the following can lead to bias in qualitative research? Select one. Using a questionnaire that was developed by a person who has a personal belief in the issue or works for the entity involved to show only positive results Obtaining approval from the Internal Review Board before implementing the research Running a sample size through a statistical analyst to ensure the results could be generalized Ensuring the survey questions will provide data related directly to the research questionThis my third time posting the same question. Because no one answer it straight to me. I already answered the question. Could you please tell me which one of these are not correct. and if so Could you please tell me the correct answer first then explain it. Also could you please highlight the correct answer for each onePlease read the following prompt, analyze the following graph, and complete questions 8.a and 8.b
- True False When you test for differences between the moons of two independent populations, you can only use a two tail testApply K-mean Clustering for the following single data set for two clusters (k=2). Data set = {2, 4, 9, 10, 3, 24, 38}ALREADY HAVE FIRST THREE ANSWERS NEED THE REST. ANOVA. Dr. Milgram is conducting a patient satisfaction survey, rating how well her patients like her on a scale of 1-10. Her patients tend to fall into three categories: “Like a lot”, “like somewhat”, and “dislike a lot”. She believes that she might get different satisfaction scores from people in each group, but (because she's not great at numbers) she wants you to do an ANOVA to be sure. She has collected data from 12 patients (three equal groups) with the following results. Group 1) “Like a lot” Mean: 8 SS: 2 N: df: Group 2) “Like somewhat” Mean: 5 SS: 6 N: df: Group 3) “Dislike a lot” Mean: 2 SS: 4 N: df: Grand Mean: 4 df Within-Group: 9 df Between-Groups: 2 Estimated Variance (S21) for Group 1: _______ Estimated Variance (S22)…
- Section 11.2 Question #4 The table below includes results from polygraph (lie detector) experiments conducted by researchers. In each case, it was known if the subjected lied or did not lie, so the table indicates when the polygraph test was correct. Use a 0.05 significance level to test the claim that whether a subject lies is independent of the polygraph test indication. Do the results suggest that polygraphs are effective in distinguishing between truth and lies? View the table Did the Subject Actually Lie? No (Did Not Lie) Yes (Lied) Polygraph test indicated that the subject lied. 9 48 Polygraph test indicated that the subject did not lie. 30 12 Determine the test statistic. χ2= _________ (Round to three decimal places as needed.) Determine the P-value of the test statistic. P-value= ___________ (Round to four decimal places as needed.)The mean heights of plants in a garden are approximately normally distributed with mean of 20 cm, variance 9 cm^2, and a random sample of size n taken from the distribution. What sample size n is necessary in order that the probability that the plants' mean height falling between 19.9 cm and 20 cm is 0.95? O 5612 O 3458 O 2142 O None olthese (Place answer in solution paper) O 335121 subpart a
- Do all the cards look correct? And the one that says " the spread of the data (range) is 20" which group does that one belong to?A father is concerned that his teenage son is watching too much television each day, since his son watches an average of 2 hours per day His son says that his TV habits are no different than those of his friends. Since this father has taken a stats class, he knows that can actually test to see whether or not his son is watching more TV than his peers The father collects a random sample of watching times from boys at his son's high school and gets the following data: 1.9, 2.3, 2.2, 1.9, 1.6, 2.6, 1.4, 2.0, 2.0, 2.2 Find a 95% confidence interval for the true mean number of hours teenagers at that school watch TV. a. Confidence Interval b. ConclusionLet's talk that scenario and work with some fictional data from it: Let's imagine there was a question on the survey that asks "On average, how many times a day do you worry about COVID-19, either for yourself, family, or community? Below is some data for 10 respondents. In the space below,describe all of the steps you would use to calculate the appropriate type of t-test (independent or paired samples), given we want to compare Trump voters to Clinton voters. For this question, just list the steps - do not do any calculations. That will be in the next question. Your list will have at least 6 steps. Just get as far as the t-statistic; no need to describe hypothesis testing steps in this problem.