Normal probability tables typically list z-score values between -3.49 and 3.49 O True O False
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Q: Determine the probability that in a sample of 100 the sample proportion is less than .75 if p = 0.80
A: Given, Sample size, n = 100 Population proportion, p =0.8 Z = p^-pp1-pn
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A: Given : x 15 25 35 45 55 P ( x) 0.05 0.35 0.25 0.05
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A: Formula used : P(A|B) = P(A∩B)P(B)
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Q: Another name for the mean is expected value. True
A: 2) Answer:- We know that In probability distribution , Expected value = mean = Σ(Xi*P(Xi)) , Xi =…
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Q: Too Young to Tat Based on a Harris poll, among adults who regret getting tattoos, 20% say that they…
A: Among adults who regret getting tattoos, 20% say that they were too young when they got their…
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- What is the probability that a registered voter voted in the election? The probability that a registered voter voted in the election is approximately. (Round to three decimal places as needed.) About 3,034,053 voted in the election About 3,529,477 of the registered voters did not voteRadioactive Decay Radioactive atoms are unstable because they have too much energy. When they release their extra energy, they are said to decay. When studying cesium-137, a nuclear engineer found that over 365 days, 1,000,000 radioactive atoms decayed to 977,287 radioactive atoms, so 22,713 atoms decayed during 365 days. a. Find the mean number of radioactive atoms that decayed in a day. b. Find the probability that on a given day, 50 radioactive atoms decayed.BlueSky Air has the best on-time arrival rate with 75% of its flights arriving on time. A test is conducted by randomly selecting 15 BlueSky Air flights and observing whether they arrive on time. What is the probability that two flights of BlueSky Air arrive late? (Please carry answers to at least six decimal places in intermediate steps. Give your final answer to the nearest three decimal places). Probability (as a proportion)
- A variable of a finite population takes values 5, 7, or 8 and has the following frequency distribution: 5 7 8 frequency 25 40 60 Construct a probability histogram for variable X.Use the standard normal probability chart, included in this exam, to look up the following numbers and draw the graph for each one. a. - .0492 b. 1.6 c. 1.06 d. -5.2BlueSky Air has the best on-time arrival rate with 77% of its flights arriving on time. A test is conducted by randomly selecting 18 BlueSky Air flights and observing whether they arrive on time. What is the probability that two flights of BlueSky Air arrive late? (Please carry answers to at least six decimal places in intermediate steps. Give your final answer to the nearest three decimal places). Probability (as a proportion)
- Use the data in the following table, which lists survey results from undergraduate school students. Assume that subjects are randomly selected from those included in the table. If one of the students is randomly selected, find the probability that the selected student took online courses and took in-person courses. Round three decimal places. Student Took Online Courses Yes Student took in-person courses 2800 Student have not taken in- 4460 person courses 0.748 354 0.345 O 285 No 720 140hwm7 17 The table summarizes results from 980 pedestrian deaths that were caused by automobile accidents. DriverIntoxicated? Pedestrian Intoxicated? Yes No Yes 50 80 No 219 631 If two different pedestrian deaths are randomly selected, find the probability that they both involved drivers that were intoxicated.Report the answer as a percent rounded to one decimal place accuracy.Too Young to Tat Based on a Harris poll, among adults who regret getting tattoos, 20% say that they were too young when they got their tattoos. Assume that five adults who regret getting tattoos are randomly selected, and find the indicated probability. Find the probability that exactly one of the selected adults says that he or she was too young to get tattoos. Group of answer choices 0.6100 0.9100 0.4100 0.1100
- Four coins are tossed, and the number of heads is recorded. Shade the region on the histogram that gives the indicated probability. P(x > 2) Which of the following shaded regions gives the indicated probability? (Type A, B, C, or D.) A) 0.5- 0.38- 0.25- 0.13- 0- 0.5- 0.38 0.25- 0.13- लट 0 1 2 3 4 01 2 3 4 B) D) 0.5- 0.38- 0.25- 0.13- 0- 0.5- 0.38 0.25 0.13- 0- 0 1 2 3 4 0 1 2 3 4Submit your answer as an exact fraction or a decimal rounded to the hundredths place. Cupcakes are being randomly passed out to every student in the class. The assortment of cupcakes is described in the table below. What is the probability of receiving a cupcake that is not vanilla flavored? Cupcake flavor Number of cupcakes Vanilla 7 Mint chocolate 3 Red velvet 4 Carrot Cake 6A poll showed that 44.5% of Americans say they believe that life exists elsewhere in the galaxy. What is the probability (in percent form) of randomly selecting someone who does not believe that life exists elsewhere in the galaxy. Probability = % (Please round your answer to one decimal place.) %3D Submit Question 17,123 NOV 1 16 tv MacBook Air 80 888 F3 F4 F5 F6 F7
