**For their final project, a group of Statistics students investigated their belief that females text more than males. They asked a random sample of students from their school to record the number of text messages sent and received over a one-day period. Here are the data:**| | | | | | | | | | | ||--------|------------|------------|------------|------------|------------|------------|------------|------------|------------|------------|| **Males** | 83 | 124 | 61 | 23 | 24 | 126 | 56 | 30 | 127 | 34 | 26 | 12 || **Females** | 76 | 121 | 71 | 47 | 60 | 173 | 24 | 83 | 52 | 41 | 34 | 169 | 23 | 85 | 20 |**c. Compare the distributions.**The students aim to determine whether the distribution of text message usage is higher among females than males based on the sample data collected. The analysis should consider both the number of texts sent and received.[An image showing a table of data for text messages sent and received by males and females.]In summary, this information highlights the project conducted by statistics students to analyze text message patterns and compare the distributions between male and female students.

Male : 83,42,34,61,20,23,55,23,24,126,56,30,127,34,26,12 Arrange data : 12, 20, 23, 23, 24, 26,…

Answered: For their final project, a group of…

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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An instructor in a statistics course set a final exami- nation and also required the students to do a data analysis project. For a random sample of 10 students, the scores obtained are shown in the table. Find the sample correlation between the examination and proj- ect scores. Examination 81 62 74 78 93 69 72 83 90 84 Project 76 71 69 76 87 62 80 75 92 79
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). Student Perpectual Bempah Megan Brooks Jeff Honeycutt Clarice Jefferson Crystal Kurtenbach Janette Lantka Kevin McCarthy Tammy Ohm Kathy Wojdya Pulse 63 79 87 75 81 81 68 74 84 (a) Determine the population mean pulse. The population mean pulse is approximately 76.9 beats per minute. (Round to one decimal place as needed.) (b) Determine the sample mean pulse of the following two simple random samples of size 3. Sample 1: {Kathy, Kevin, Megan} Sample 2: (Perpectual, Megan, Jeff} The mean pulse of sample 1 is approximately (Round to one decimal place as needed.) A beats per minute.
Consider the following ordered data. 6 9 9 10 11 11 12 13 14 Find the low, Q1, median, Q3, and high.
A researcher is interested in the relationship between age and golf performance. The researcher claims that golf performance improves with age, that is, as one gets older, his or her golf scores decrease. [In golf, a low score represents better performance; a higher score represents worse performance.] The researcher randomly selects a group of eight golfers at the local golf course and records their ages and their most recent golf score. The data that were collected are presented below: Golfer's Name Diego Tiger Bogart Marilyn Jennifer Mitch Bubba Amber Age (years) Variable 1 23 14 38 43 49 36 72 Golf Score Variable 2 92 112 77 84 81 72 79 86 Which of the following are the correct statements of the null and alternate hypotheses, Ho and HA? O Ho: M₁ M₂ and HA: H1 H₂
B. Present these given Math grades of high school students in the indicated data organization. 88 93 80 80 90 95 84 67 90 92 93 87 75 89 79 92 87 90 83 87 80 80 91 79 81 d. Stem leaf e. Box and whisker 99 1878 89 77 82 75 87 84 82 75 85 90 86 76 76 90
A researcher wants to see if there is a difference in APGAR scores of newborns depending on whether the mother smoked during pregnancy or not. She collects data and analyzes the results using SPSS. What is the correct way to report the results in APA style? Question 23 options: t(58) = 3.288, p>.05 t(58) = 3.288, p= .002 t(26.5) = 3.278, p<.05 t(26.5) =3.278, p=.003
When a student performs poorly on a midterm exam, the student sometimes is convinced that their score is an anomaly and that they will do much better on the final exam. The data below show the midterm and final scores (out of 100 points) for eight students in an introductory statistics class. Student Midterm Final 1 70 88 2 58 52 3 85 84 4 82 74 5 70 80 40 36 7 85 48 8 85 96 a) Construct a scatterplot for the data. Describe the pattern that you see in the scatterplot. Are there any clusters or outliers? If so, how would you explain them? b) Calculate the regression line for predicting a student's score on the final exam based on the student's score on the midterm.
Consider the data below describing students' score in Mathematics at a school. 78 82 78 75 46 53 69 64 72 83 89 47 77 64 62 72 67 59 82 66 50 54 83 43 69 67 50 70 68 77 91 40 75 75 57 69 80 63 98 67 64 73 100 69 73 67 89 49 61 58 60 79 76 63 54 56 58 69 50 74 35 94 81 73 47 70 58 67 82 61 64 44 83 85 59 62 85 73 62 75 81 68 76 69 85 46 72 57 76 64 70 48 90 83 59 54 83 84 92 72 99 82 96 63 73 63 50 79 59 87 76 54 71 67 88 61 69 72 72 87 56 83 100 95 94 82 49 85 46 77 48 72 70 68 31 94 96 74 94 92 97 43 81 68 73 85 94 54 72 63 76 63 71 56 78 62 82 49 68 73 68 73 75 51 79 32 57 49 55 81 79 49 67 76 66 75 57 76 61 69 72 46 75 57 53 53 66 88 65 96 84 72 64 59 46 80 41 41 69 55 Using SPSS, 1) Arrange the data in a stem-and leaf plot. Then, determine whether the data is normally distributed or not? Justify your answers.
Performance anxiety is a disorder that impacts over 60 per cent of the world’s population. The impact of different types of performative activity on anxiety levels is not clear. 120 individuals were included in a focus group and where subject to performances in speech, dance and singing in front of a live audience. Their heart rates were measured for each performance and the average rate recorded: Speaking Singing Dancing 148 86 116 146 149 105 144 75 133 139 114 82 96 131 141 72 114 121 121 140 136 77 135 101 109 106 91 100 112 93 87 140 76 71 110 77 107 73 112 82 145 92 117 114 105 80 89 71 80 150 122 117 139 134 73 98 120 104 144 116 93 84 118 123 118 113 95 114 136 73 78 89 137 146 109 74 133 101 75 144 139 98 125 91 141 101 124 81 113 120 124 126 95 108 127 108 101 138 125 139 81 136 116 123 126 139 132 80 72 107 76 137 119 109 143 140 120 128 137 138 150 82 98 106 86 133 140 87 72 148 101…

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