**Educational Text Transcription:**Use the following data sets in problems #4-#6.**Data Set 1:** A genetic study was performed on stickleback fish. A random sample of 40 stickleback fish showed the following number of armored plates found on stickleback fish:| | | | | ||---|---|---|---|---|| 12 | 54 | 52 | 52 | 54 || 52 | 61 | 63 | 52 | 49 || 54 | 21 | 62 | 42 | 9 || 51 | 60 | 30 | 35 | 57 || 27 | 24 | 55 | 49 | 50 || 53 | 58 | 48 | 61 | 53 || 55 | 62 | 50 | 50 | 50 || 51 | 27 | 60 | 12 | 54 || 12 | 11 | 10 | 62 | 62 |**Data Set 2:** It has been hypothesized that the body temperature of healthy adult humans is normally distributed. A random sample of 25 healthy adults resulted in the following body temperatures:| | | | | ||---|---|---|---|---|| 98.6 | 99.4 | 98.5 | 98.3 | 98.4 || 98.8 | 99.3 | 99.2 | 99 | 98.3 || 97.5 | 98.2 | 98.6 | 98.9 | 99.3 || 98.6 | 98.9 | 99.1 | 98.2 | 98 || 97.8 | 98.5 | 98.2 | 99 | 98.8 |**Questions:**4. For each of the data sets, calculate the mean and median. Based on the mean and median, what is the most likely distribution of each data set?5. Construct a stem-and-leaf plot and a boxplot for each data set.6. Do the graphs in #5 support your answers to #4? Justify your answer using a complete sentence(s) and proper grammar.

A random sample of 40 stickleback fish is given as follows: Fish 9 54 9 57 9 60 10 61…

Answered: Use the following data sets in problems…

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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4
Eight students are selected randomly, and their present graduate GPA is compared to their undergraduate GPA and Scores on standardized tests. The data are shown below: Present 3.89 3.03 3.34 3.85 3.93 3.06 3.69 3.91 GPA Undergr 3.77 2.75 3.11 3.75 4 2.92 3.7 3.88 GPA Std. 700 460 550 690 720 420 670 670 Scores a. Write the regression equation, letting undergraduate GPA be x1 and standard scores be x2. X2. b. Is the model useful in calculating the present graduate GPA of a student? Use a = 0.05, State the null and alternative hypothesis. Provide the complete Regression Analysis.
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How long did real cowboys live? One answer may be found in the book The Last Cowboys by Connie Brooks (University of New Mexico Press). This delightful book presents a thoughtful sociological study of cowboys in West Texas and Southeastern New Mexico around the year 1890. A sample of 32 cowboys gave the following years of longevity: 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 93 58 47 (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 numbers from smallest to largest separated by spaces. Enter NONE for stems with no values.) Longevity of Cowboys
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5. A high school teacher wants to see if there is an effect on vocabulary recall between when students take a quiz before lunch and when they take it after lunch. She randomly selected 10 students and assessed them before lunch on Tuesday. On Wednesday she randomly selected 10 students and assessed them after lunch. The following were the percentage results Before lunch 62 60 68 64 72 75 63 60 64 80 After lunch 72 85 72 62 84 76 66 63 65 64 What type of samples were selected – independent or dependent (paired)? Explain. StatCrunch was used to analyze the data, and the output for both types of samples (independent and dependent) is given below. Using the appropriate output, determine if the mean quiz score is higher for those who take the quiz before lunch over those who take the quiz after lunch at a significance level of 0.05. Hypothesis test results: mean before lunch mean after lunch Hypothesis test results: : µi - µ2 : mean of the PAIRED difference µ2 : between Before and After…
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