3.17 Scores on stats final: Below are final exam scores of 20 Introductory Statistics students. The mean scoreis 77.7 points and the standard deviation is 8.44 points. Do the exam scores approximately follow the 68-95-99.7% Rule?57 66 69 71 72 73 74 77 78 78 79 79 81 81 82 83 83 88 89a) Determine the bins for each percentage of the 68-95-99.7 Rule.68% range of values:MEAN 15D=69.2695% range of values:MEAN + 2SD 60.8299.7% Range of values:MEAN 3SD = 52.3831786.14b) Find the frequency and relative frequency for each of the bins above using the final exam scores.Write the relative frequency in percent.Frequency of Each BinRelative Frequency (%)094.58103.02X 70%X 95%X100%c) Do the exam scores approximately follow the 68-95-99.7% Rule?Hint: Compare the Relative Frequencies with the 68-95-99.7% Rule.No, we need more information to decide if this distribution is a Normal Distribution.O Yes, the Relative frequency of each bin follows approximately the 68-95-99.7 Rule, and therefore thedata follows a Normal Distribution.94

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Answered: 3.17 Scores on stats final: Below are…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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In the 1992 presidential election, Alaska's 40 election districts averaged 1993 votes per district for President Clinton. The standard deviation was 584. (There are only 40 election districts in Alaska.) The distribution of the votes per district for President Clinton was bell-shaped. Let X = number of votes for President Clinton for an election district. (Source: The World Almanac and Book of Facts) Round all answers except part e. to 4 decimal places. a. What is the distribution of X? X ~ N( b. Is 1993 a population mean or a sample mean? Select an answer v C. Find the probability that a randomly selected district had fewer than 2053 votes for President Clinton. d. Find the probability that a randomly selected district had between 2074 and 2208 votes for President Clinton. e. Find the 95th percentile for votes for President Clinton. Round your answer to the nearest whole number.
help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working
The top 16 winning scores for NFL games are listed below. Find the mean score. Video Tutorial: How to find the mean on a TI-84 72 54 52 54 70 51 56 58 58 52 51 63 51 48 52 61 A. 54 B. 57.1 C. 63.2 D. 56.4
The average number of words in a romance novel is 64,289 and the standard deviation is 17,272. Assume the distribution is normal. Let X be the number of words in a randomly selected romance novel. Round all answers to 4 decimal places where possible.b. Find the proportion of all novels that are between 62,562 and 79,834 words. ________________c. The 85th percentile for novels is words. (Round to the nearest word) ________________d. The middle 70% of romance novels have from _______ words to _______ words. (Round to the nearest word)
Please find the mean, median and mode of the following data set. 71 79 84 84 88 90 91 93 95 98 mean (¯xx¯) = 87.3 median = 89 mode = 84 A new number, 262, is added to the data set above. Please find the new mean, median and mode of the new data set. mean (¯xx¯) = 103 median = 90 mode = 84 Which central tendency measure is most affected by the addition of the extreme observation? Mean
Use the Empirical Rule. The mean speed of a sample of vehicles along a stretch of highway is 71 miles per hour, with a standard deviation of 5 miles per hour. Estimate the percent of vehicles whose speeds are between 61 miles per hour and 81 miles per hour. (Assume the data set has a bell-shaped distribution.) Approximately ________ % of vehicles travel between 61 miles per hour and 81 miles per hour.
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Q3 Please answer it and explain
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