1. Given below are information from a sample of single-pet owners (out of a total of 120 single-pet owners) in anexclusive housing complex.Age of PetOwnerSex ofAge of PetSex ofPetPetPetPetPetOwnerPetOwnerOwnedOwnerOwnedOwner(in years)Owner(in years)M16Dog14M28Others2F16Cat15F42Dog3M24Dog16F17Cat4F16Others17M23OthersF16Cat18M55DogM17Others19M18CatM30Cat20F40Dog855Dog21M16Others9M18Others22F38Dog10F25Cat23F61Cat1117Dog24M34Cat12M20Dog25F62Dog1321CatShow your complete solution to each problem.g. Compute the measures of variation of the ages of the pet owners.

Given: Age of pet owners 16 16 24 16 17 30 55 18 25 17 20 21

Answered: 1. Given below are information from a…

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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Give the statistical meaning of the relationship between the spending hours on using mobile andreading books per day.
1. pg 287 Finger length and gender Is there a relationship between gender and relative finger length? To find out, we randomly selected 452 U.S. high school students who completed a survey. The two-way table summarizes the relationship between gender and which finger was longer on the left hand (index finger or ring finger). Longer finger Index finger Ring finger Same length Total Gender Female 78 82 52 212 Male 45 152 43 240 Total 123 234 95 452 Suppose we randomly select one of the survey respondents. Define events R: ring finger longer and F: female. (a) Find P(R | F). Interpret this value in context. (b) Given that the chosen student does not have a longer ring finger, what's the probability that this person is male? Write your answer as a probability statement using correct symbols for the events.
1. Given below are information from a sample of single-pet owners (out of a total of 120 single-pet owners) in an exclusive housing complex. Sex of Age of Pet Sex of Age of Pet Pet Pet Pet Pet pet Owner Pet Owner Owner Owned Owner Owned Owner (in years) Owner (in years) 1 M 16 Dog 14 M 28 Others 2 F 16 Cat 15 F 42 Dog 3 M 24 Dog 16 F 17 Cat 4 F 16 Others 17 M 23 Others F 16 Cat 18 M 55 Dog 6 M 17 Others 19 M 18 Cat 7 M 30 Cat 20 F 40 Dog 8 55 Dog 21 M 16 Others 9 M 18 Others 22 F 38 Dog 10 F 25 Cat 23 61 Cat 11 F 17 Dog 24 M 34 Cat 12 M 20 Dog 25 F 62 Dog 13 21 Cat Show your complete solution to each problem. b. The sample is only 1 out of how many samples that can be generated from the population?
question 4 only
Is there a relation between murder and arson? A random sample of 15 Midwest cities (over 10,000 population) gave the following information about an annual number of murder and arson cases. (Reference: Federal Bureau of Investigation, U.S. Department of Justice.) City 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Murder 13 11 24 15 14 10 19 20 22 16 18 6 21 8 17 Arson 96 47 92 72 38 36 162 80 111 85 84 37 146 4 51 Use a 1% level of significance to test the claim that there is a monotone-increasing relationship between the ranks of murder and arson. (a) Rank-order murder using 1 as the largest data value. Also, rank-order arson using 1 as the largest data value. Then construct a table of ranks to be used for a Spearman rank correlation test. City MurderRank x ArsonRank y d = x - y d2 123456789101112131415 Σd2 = please show formula or steps explain your answer
3. A mathematics placement test is given to all entering freshmen at a small college. A student who receives a grade below 35 is denied admission to the regular mathematics course and placed in a remedial class. The placement test scores and the final grades for 20 students who took the regular course were recorded as follows: Placement Test Course Grade | Placement Test | Course Grade 50 53 90 54 35 35 41 80 60 91 61 48 40 56 60 71 55 68 60 71 65 36 40 47 35 11 55 53 60 70 50 68 90 79 65 57 35 59 50 79 (a) Plot a scatter diagram. (b) Find the equation of the regression line to predict course grades from placement test scores. (c) Graph the line on the scatter diagram (d) If 60 is the minimum passing grade, below which placement test score should students in the future be denied admission to this course?
The racial/ethnic diversity of post high school students enrolled at MVCC during the fall 2020 semester is given below. Racial/Ethnic Diversity of Post High School Students Race/Ethnicity Percent* American Indian or Alaska Native 0.4% Asian 5.3% Black or African American 9.6% Hispanic or Latino 9.6% Two or more races 2.8% Native Hawaiian or Pacific Islander <0.1% Non-Resident Alien 0.5% Unknown 1.5% White 70.2% (*Percentages may not total 100 due to rounding) What is the race/ethnicity of the majority of students at MVCC? What total percent of students were either Black or African American or Hispanic or Latino? There were 3,444 students enrolled at MVCC at the time of the study. How many (not percent) students were Asian? (The answer must be a whole number.)
High levels of cholesterol in the blood are associated with higher risk of heart attacks. Will using a drug to lower blood cholesterol reduce heart attacks? The Helsinki Heart Study recruited middle-aged men with high cholesterol but no history of other serious medical problems to investigate this question. The volunteer subjects were assigned at random to one of two treatments: 2051 men took the drug gemfibrozil to reduce their cholesterol levels, and a control group of 2030 men took a placebo. During the next five years, 56 men in the gemfibrozil group and 84 men in the placebo group had heart attacks. Is the apparent benefit of gemfibrozil statistically significant? Using proportion values rounded to four decimal places, what is the z- test statistic? Round your answer to two decimal places.
1. Given below are information from a sample of single-pet owners (out of a total of 120 single-pet owners) in an exclusive housing complex. Sex of Age of Pet Sex of Age of Pet Pet Pet Pet Pet Pet Owner Pet Owner Owner Owned Owner Owned Owner (in years) Owner (in years) M 16 Dog 14 M 28 Others F 16 Cat 15 F 42 Dog 3 M 24 Dog 16 F 17 Cat 4 F 16 Others 17 M 23 Others F 16 Cat 18 M 55 Dog 6 M 17 Others 19 M 18 Cat 7 M 30 Cat 20 40 Dog 8 F 55 Dog 21 M 16 Others 9 18 Others 22 F 38 Dog 10 25 Cat 23 F 61 Cat 11 17 Dog 24 M 34 Cat 12 20 Dog 25 F 62 Dog 13 21 Cat Show your complete solution to each problem. e. Use graphs/charts to present the data gathered (one graph/chart for each variable).
The racial/ethnic diversity of post high school students enrolled at MVCC during the fall 2020 semester is given below. Racial/Ethnic Diversity of Post High School Students Race/Ethnicity Percent* American Indian or Alaska Native 0.4% Asian 5.3% Black or African American 9.6% Hispanic or Latino 9.6% Two or more races 2.8% Native Hawaiian or Pacific Islander <0.1% Non-Resident Alien 0.5% Unknown 1.5% White 70.2% (*Percentages may not total 100 due to rounding) Is race/ethnicity a qualitative or quantitative variable Is the data displayed in a frequency or relative frequency distribution?
Let x be the percentage of 16- to 19-year-olds not in school and not high school graduates. Let y be the reported violent crimes per 1000 residents. Six small cities in Arkansas (Blytheville, El Dorado, Hot Springs, Jonesboro, Rogers, and Russellville) reported the following information about x and y. x 24.2 18.6 17.8 14.9 19.0 17.5 y 13.0 4.6 8.8 1.3 0.8 3.6 Complete parts (a) through (e), given Σx = 112, Σy = 32.1, Σx2 = 2137.7, Σy2 = 282.89, Σxy = 654.37, and r ≈ 0.763. (b) Verify the given sums Σx, Σy, Σx2, Σy2, Σxy, and the value of the sample correlation coefficient r. (Round your value for r to three decimal places.) Σx = Σy = Σx2 = Σy2 = Σxy = r = (c) Find x, and y. Then find the equation of the least-squares line = a + bx. (Round your answers for x and y to two decimal places. Round your answers for a and b to three decimal places.) x = y = = + x

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