How long did real cowboys live? One answer may be found in the book The Last Cowboys by Connie Brooks (University of New MexicoPress). This delightful book presents a thoughtful sociological study of cowboys in West Texas and Southeastern New Mexico around theyear 1890. A sample of 32 cowboys gave the following years of longevity:5852688672669789849191926668878673617075727385849057777684935847(a) Make a stem-and-leaf display for these data. (Use the tens digit as the stem and the ones digit as the leaf. Enter numbersfrom smallest to largest separated by spaces. Enter NONE for stems with no values.)Longevity of Cowboys

Given 58 52 68 86 72 66 97 89 84 91 91 92 66 68 87 86 73 61 70 75 72 73 85 84 90 57 77 76 84…

Answered: How long did real cowboys live? One…

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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1. We are interested in determining if absences from a class affect your overall class grade. The following data from 10 students is provided: Absences Grade 89.2 1 83.7 83.5 81.1 4 78.2 73.9 6 64.3 7 71.8 8 55.9 65.2
Please help by showing all workings and explanations
question 4 only
The data represent the ages of our Presidents at the time they were first inaugurated. 57 61 57 57 58 57 61 54 68 51 49 64 50 48 65 52 56 46 54 49 51 47 55 55 54 42 51 56 55 51 54 51 60 62 43 55 56 61 52 69 64 46 54 47 Were the data obtained from a population or a sample? Explain your answer.
Need Help with this question and thank you! Here's the data: Occupation Frequency Hyp. Prop Management 1560 0.09 Business 3199 0.18 Sciences 1271 0.07 Health 1178 0.07 Social sci. 1621 0.09 Arts, rec, sports 560 0.03 Sales, service 4262 0.24 Trades, transport 2614 0.15 Unique to primary 560 0.03 Unique to processing 775 0.05 17600
Which of the following data sets shows categorical data? Course Grade 72 78 85 90 98 Class Size 22 23 25 28 32 Flight Number 1002 1274 4012 5661 7812 Number of Coins 1 3 4 8 19
Let’s talk about grades. Below is a collection of grades randomly selected from the students taking a statistics final exam administered to all students taking statistics at one college in one particular year. 69 70 70 72 73 73 76 77 77 7878 79 80 80 8081 82 82 83 8488 89 92 93 94 1. The 25 student scores above would represent... A.a sample statistic B.a parameter C.a census D.a population E.a sample 2.The professor wants to analyze the results of these grades. Find the median grade for the students. 3.Assume that the distribution is approximately normal with a mean and standard deviation of 80 and 7 respectively. What is the probability that a student would score higher than a 90 on the final? 4.
City Time (minutes) Rome 24.9 Milan 26.8 Naples 26.2 Turin 28.1 Palermo 31.7 Genoa 25.8 Bologna 23.3 Florence 32.1 Bari 28.5 Catania 24.4 Verona 29.3 Venice 24.8 Messina 38.1 Padua 28.3 Trieste 28.4 Taranto 24.6 Prato 20.1 Modena 23.4 a) What is the mean commute time for these 18 cities? b) What is the median commute time for these 18 cities? c) What is the mode for these 18 cities? d) What is the variance and standard deviation of commute times for these 18 cities? e) Find the z – score value of commute time for these 18 cities. f) Find 28th and 77th Percentile of commute times for these 18 cities.
Moving to another question will save this response. Question 5 Obtain the five-number summary for the given data. The test scores of 15 students are listed below. 42 45 50 53 57 61 67 68 75 76 85 87 90 94 95 O 42, 53, 71.5, 87, 95 42, 52.25, 71.5, 85.5, 95 O 42, 53, 68, 87, 95 O 42, 52.25, 68, 85.5, 95 A Moving to another question will save this response. earch F2 DII F3 F4 F5 PrtS 5 W
Suppose course evaluation ratings for four college instructors are shown in the following table. Instructor Black Jennings Swanson Wilson 89 87 89 80 80 79 76 83 78 85 69 56 69 83 85 72 96 98 83 88 68 98 85 87 83 84 94 81 82 Use ? = 0.05 and test for a significant difference among the rating for these instructors. State the null and alternative hypotheses. 1. H0: MedianB = MedianJ = MedianS = MedianW Ha: MedianB ≠ MedianJ ≠ MedianS ≠ MedianW 2. H0: MedianB ≠ MedianJ ≠ MedianS ≠ MedianW Ha: MedianB = MedianJ = MedianS = MedianW 3. H0: Not all populations of teaching evaluations are identical. Ha: All populations of teaching evaluations are identical. 4. H0: MedianB = MedianJ = MedianS = MedianW Ha: MedianB < MedianJ > MedianS > MedianW 5. H0: All populations of teaching evaluations are identical. Ha: Not all populations of teaching evaluations are identical. Find the value of the test statistic. (Round your answer to…
The table below shows the number of new AIDS cases in the U.S. in each of the Descriptive years 1989-1994. Inferential Year New AIDS cases 1989 33,643 1990 41,761 1991 43,771 1992 45,961 1993 103,463 1994 61,301 Classify the study as either descriptive or inferential.
The 94 students in a statistics class are categorized by gender and by year in school. The numbers obtained are displayed in the table. Gender Freshman Sophomore Junior Senior Graduate Total Male 1 2 9 17 2 31 Female 23 17 13 7 3 63 Total 24 19 22 24 5 94 What proportion of the statistics students in this class are sophomores? 19 0.202 0.302 0.105

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