JUST GIVE ME THE ANSWER

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A normal distribution has mean ,u and standard deviation 0 . An X-value is randomly selected from the distribution. Find P(x 3 y + 20) . P(xg,u+20)= D -NWAUT O 1-10 11-2 21-30 Which of the following show an approximately normal distribution? Select all that apply. 31 1-40 41-50 - NWAUO 51- 09 1- 11-20 21-30 31-40 41-50 51-60 O-NWAU 1-10 11-20 21-30 31-40 41-50 -NWAUO 51-6 -10 1-20 21-30 31 -40 41-5 51In the United States, a survey of 3005 adults found that 2711 of them like to read magazines. Identify the population and the sample. ll 2711 adults who like to read responses of all adults in the United 3005 responses of adults in the magazines States survey #4 i Save / Exit Sub Classify the following samples as biased or unbiased. 1. A radio station asks listeners to call in and participate in a poll about radio advertisements. 2. Every fourth person who boards an airplane is asked whether he or she thinks airline prices are reasonable. :: Biased :: UnbiasedThe average numbers of minutes spent exercising each day for a random sample of 9 children are shown in the table. Estimate the @ population mean ,u . Round your answer to the nearest hundredth. Average Number of Minutes Exercising 6O 90 90 85 55 75 7O 60 50 A randomized comparative experiment tests whether a new language program improves test scores on a college exam. The control group has eight students and the treatment group, which uses the new language program, has eight students. The exam scores for both groups are shown in the table. What is the experimental difference of the means? Exam Scores Control Group 80 82 79 84 78 75 81 81 Treatment Group 84 87 82 83 85 79 82 81 The experimental difference of the means is D. #7 i -: The scores on a college history exam are normally distributed with a mean of 80 and a standard deviation of 4. The test scores range from 0 to 100. A score of at least 88 points is necessary to receive a grade of A. About what percent of students taking the test receive a grade of A or better on the exam? about |:] % #8i [3 Save / Exi The times a fire department takes to arrive at the scene of an emergency are normally distributed with a mean of 6 minutes and a standard deviation of 1 minute. For about what percent of emergencies does the fire department arrive at the scene in 7 minutes or less? about E % In a survey of 110 emergency rooms at hospitals in the United States, the mean wait time is 13 minutes. Does the mean wait time [ represent a parameter or a statistic? f% The mean wait time is a v parameter statistic #10 i A normal distribution has mean u and standard deviation o . An x-value is randomly selected from the distribution. Find P ( u - o