3. Consider the result of a fictional Statistics final exam taken by 120 students,as given in the following frequency distribution:GradeLess than 5050 - 5960 - 6970 - 7980 - 8990 - 100Frequency15%10%30%25%15%5%How many students received at least a 70 in this exam?A.542545D.B.

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Answered: 3. Consider the result of a fictional…

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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(a) Determine the population mean pulse. The following data represent the pulse rates (beats per minute) of nine students enrolled in a statistics course. Treat the nine students as a population. Complete parts (a) through (c). The population mean pulse is approximately beats per minute. (Round to one decimal place as needed.) Student Pulse O Perpectual Bempah 76 Megan Brooks Jeff Honeycutt 80 85 Clarice Jefferson 75 Crystal Kurtenbach 60 Janette Lantka 64 Kevin McCarthy 79 Tammy Ohm 80 Kathy Wojdya 84
Students were asked what grades they usually get in school. For twelfth-grade students who responded to this question and the question about how often they wear seatbelts when driving, a summary of frequency counts for combinations of responses to the two questions is as follows. WearsSeatbelt Usual School Grades A and B C D and F Total Never 55 40 17 112 Rarely 129 95 21 245 Sometimes 168 109 9 286 Most times 290 129 25 444 Always 1,059 305 50 1,414 Total 1,701 678 122 2,501 (a) The total number of students in the table is 2,501. What percentage of these 2,501 students said that they usually get A's and B's in school? (Round your answer to one decimal place.) % (b) What percentage of the 1,701 students who said that they usually get A's and B's said that they always wear a seatbelt when driving? (Round your answer to one decimal place.) % (c) What percentage of the 678 students who said that they usually get C's said that they always wear a…
9. In 2016 an online poll was conducted regarding the results of the 2016 NBA All-Star Dunk Contest. The poll asked 100,000 people, "Who [do you think] won the dunk contest?". The results are shown in the relative frequency table below Response Percentage Aaron Gordon 55% Zach Lavine 45%
Descriptive Statistics.For the given data:4 8 18 20 21 22 23 24 25 26 27 28 29 30 30 31 31 32 32 33 33 34 35 36 37 38 39 47 53 a. Make a Frequency Diagram with 7 classes.b. Draw the histogram.
Among fatal plane crashes that occurred during the past 70 years, 332 were due to pilot error, 63 were due to other human error, 265 were due to weather, 290 were due to mechanical problems, and 478 were due to sabotage. Construct the relative frequency distribution. What is the most serious threat to aviation safety, and can anything be done about it? Complete the relative frequency distribution below. Cause Relative Frequency Pilot error nothing% Other human error nothing% Weather nothing% Mechanical problems nothing% Sabotage nothing% (Round to one decimal place as needed.) What is the most serious threat to aviation safety, and can anything be done about it? A. Weather is the most serious threat to aviation safety. Weather monitoring systems could be improved. B. Mechanical problems are the most serious threat to aviation safety. New planes could be better engineered. C.…
(a) Determine the population mean pulse. The following data represent the pulse rates (beats per minute) of nine students enrolled in a statistics course. Treat the nine students as a population. Complete parts (a) through (c). The population mean pulse is approximately beats per minute. (Round to one decimal place as needed.) Student Pulse O Perpectual Bempah 81 Megan Brooks Jeff Honeycutt 75 75 Clarice Jefferson 84 Crystal Kurtenbach 90 Janette Lantka 71 Kevin McCarthy 67 Tammy Ohm 71 Kathy Wojdya 85
Subject : Basic Statistics 2. I've posted an image of the question.
2. Plot histogram and polygon diaerat! H.W(1) the data below represent workers' wages: 10 21 43 46 53 75 55 40 36 47 30 41 48 52 32 47 35 46 56 66 62 61 21 63 22 37 15 57 25 27 50 72 31 45 32 39 49 35 42 54 42 44 51 32 44 48 23 71 18 65 1. Create a frequency table. 3. Plot Ascending and descending cumulative frequency. 4. Find the number of workers who have wages less than 35$. 5. Find the percentage of the number of workers who their wages ranging are between (25-55)$.
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3. Consider the result of a fictional Statistics final exam taken by 120 students, as given in the following frequency distribution: Grade Less than 50 50 - 59 60 - 69 70 - 79 80 - 89 90 - 100 Frequency 15% 10% 30% 25% 15% 5% How many students received at least a 70 in this exam? A. 54 25 45 D. B.