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MATH 225N STATISTICS QUIZ WEEK 4 MATH 225N STATISTICS QUIZ WEEK 4 MATH 225N STATISTICS QUIZ WEEK 4 MATH 225N STATISTICS QUIZ WEEK 4 MATH 225N STATISTICS QUIZ WEEK 4 MATH 225N STATISTICS QUIZ WEEK 4

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2022/2023

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Download MATH 225N STATISTICS QUIZ WEEK 4[100% VERIFIED QUESTIONS AND ANSWERS] and more Exams Nursing in PDF only on Docsity! MATH 225N STATISTICS QUIZ WEEK 4 VERIFIED QUESTIONS AND ANSWERS 2022/2023 DOWNLOAD TO SCORE A PLUS That is correct! Answer: 16 Boxes That is correct! Answer: median=26 thousands of dollars That is correct! Answer: mode=3 cards Question 1 Alice sells boxes of candy at the baseball game and wants to know the mean number of boxes she sells. The numbers for the games so far are listed below. 16,14,14,21,15 Find the mean boxes sold. Question 2 Given the following list of prices (in thousands of dollars) of randomly selected trucks at a car dealership, find the median. 20,46,19,14,42,26,33 Question 3 Each person in a group shuffles a deck of cards and keeps selecting a card until a queen appears. Find the mode of the following number of cards drawn from a deck until a queen appears. 3,12,3,11,5,5,3,10,12 Question 4 The dataset below represents bugs found by a software tester in her product during different phases of testing: 88, 84, 81, 94, 91, 98, 98, 200. The measures of central tendency are given below: Mean: 104.25; Median: 92.5; Mode: 98. Identify the outlier and the measure of central tendency that is affected by the outlier. MATH 225N STATISTICS QUIZ WEEK 4 VERIFIED QUESTIONS AND ANSWERS 2022/2023 DOWNLOAD TO SCORE A PLUS That is correct! The outlier is 98. The mode is affected by the outlier. The outlier is 98. The mean is affected by the outlier. The outlier is 200. The median is affected by the outlier. The outlier is 200. The mean is affected by the outlier. Question 5 Given the following histogram, decide if the data is skewed or symmetrical. A bar graph has a horizontal axis titled Values labeled from 2 to 18 in increments of 2 and a vertical axis titled Frequency labeled from 0 to 200 in increments of 50. 14 bars are plotted, above the numbers 2 to 16. From left to right, the heights of the bars are as follows: 1. 5. 10. 40, 75, 125, 190, 180, 130, 125, 60, 25,20, 10. All values are approximate. The data are skewed to the left. The data are skewed to the right. The data are symmetric. That is correct! MATH 225N STATISTICS QUIZ WEEK 4 VERIFIED QUESTIONS AND ANSWERS 2022/2023 DOWNLOAD TO SCORE A PLUS That is correct! That is correct! has the following five-number summary: 60, 72, 75, 80, and 92. The box-and-whisker plot above the class label D has the following five-number summary: 2, 63, 77, 92, and 138. All values are approximate. A B C D Question 8 The box-and-whisker plot shows the number of books read by history students during the last school year. A box and whisker plot with minimum 4, first quartile 6, median 8, third quartile 10, and maximum 15 What is the range of the data? That is correct! Answer: 11 Question 9 A random sample of house sizes in major city has a sample mean of x¯=1204.9 sq ft and sample standard deviation of s=124.6 sq ft. Use the Empirical Rule to determine the approximate percentage of house sizes that lie between 955.7and 1454.1 sq ft. Round your answer to the nearest whole number (percent). Answer: 95% Question 10 MATH 225N STATISTICS QUIZ WEEK 4 VERIFIED QUESTIONS AND ANSWERS 2022/2023 DOWNLOAD TO SCORE A PLUS That is correct! That is correct! That is correct! Answer: 73/80 Is the statement below true or false? Independent is the property of two events in which the knowledge that one of the events occurred does not affect the chance the other occurs. True False Question 11 Brayden tosses a coin 500 times. Of those 500 times, he observes heads a total of 416 times. Calculations show that the probability of this occurring by chance is less than 0.01, assuming the coin is fair. Determine the meaning of the significance level. We expect that 416 of every 500 coin tosses will result in heads. At the 0.01 level of significance, the coin is likely not a fair coin. There is certainty that the coin is not a fair coin. The results are not statistically significant at the 0.05 level of significance. Question 12 A spinner contains the numbers 1 through 80. What is the probability that the spinner will land on a number that is not a multiple of 11? • Give your answer in fraction form. Question 13 Of the following pairs of events, which pair has mutually exclusive events? MATH 225N STATISTICS QUIZ WEEK 4 VERIFIED QUESTIONS AND ANSWERS 2022/2023 DOWNLOAD TO SCORE A PLUS That is correct! rolling a sum greater than 7 from two rolls of a standard die and rolling a 4 for the first throw drawing a 2 and drawing a 4 with replacement from a standard deck of cards MATH 225N STATISTICS QUIZ WEEK 4 VERIFIED QUESTIONS AND ANSWERS 2022/2023 DOWNLOAD TO SCORE A PLUS That is correct! heights. The data are shown in the contingency table below. What is the relative risk of being afraid of heights for those who are afraid of flying? Round your answer to two decimal places. Afraid of heights Not afraid of heights Total Afraid of flying 76 33 109 Not afraid of flying 82 370 452 Total 158 403 561 Answer: 3.84 Question 17 Which of the following frequency tables show a skewed data set? Select all answers that apply. That is correct! Value Frequency 5 1 6 2 7 10 8 11 9 17 10 17 11 15 12 12 13 7 14 7 15 0 16 1 Value Frequency 5 1 MATH 225N STATISTICS QUIZ WEEK 4 VERIFIED QUESTIONS AND ANSWERS 2022/2023 DOWNLOAD TO SCORE A PLUS Value Frequenc 0 6 3 7 8 8 10 9 13 10 26 11 14 12 12 13 8 14 3 15 1 16 1 Value Frequency 12 1 13 1 14 3 15 6 16 23 17 29 18 19 19 15 20 3 5 1 16 2 23 3 19 4 22 5 9 6 4 7 2 Question 18 A student wants to know his average homework grade for the first half of his math class. There were 7 homeworks in the first half of the class, and his grades out of 100 are given by 100,90,95,89,92,85,95. What is the population mean of his homework grades? Round your answer to the nearest tenth. MATH 225N STATISTICS QUIZ WEEK 4 VERIFIED QUESTIONS AND ANSWERS 2022/2023 DOWNLOAD TO SCORE A PLUS MATH 225N STATISTICS QUIZ WEEK 4 VERIFIED QUESTIONS AND ANSWERS 2022/2023 DOWNLOAD TO SCORE A PLUS MATH 225N STATISTICS QUIZ WEEK 4 VERIFIED QUESTIONS AND ANSWERS 2022/2023 DOWNLOAD TO SCORE A PLUS That is correct! Question 25 The following frequency table summarizes a set of data. What is the five-number summary? Value Frequency 3 3 5 2 10 1 13 1 14 3 15 3 16 1 20 1 Min Q1 Median Q3 Max 3 5 9 15 20 Min Q1 Median Q3 Max 3 10 11 17 20 Min Q1 Median Q3 Max 3 5 14 15 20 Min Q1 Median Q3 Max 3 6 18 17 20 Min Q1 Median Q3 Max 3 6 7 14 20 Answer: Interquartile range is 15 That is correct!