TableDrug Use Characteristics of Adolescent Treatment Centers (N-181)SubstanceGreatest problem drug Lifetime Use"Marijuana65.799.4Nicotine11.081.8Alcohol6.194.5Cocaine/crack5.534.8Club drugs3.932.0Heroin/illicit methadone3.313.8Hallucinogens3.331.5Benzos/depressants1.231.5Inhalants9.4Prescription opiates25.45. How many of the 181 adolescents reported nicotine as their greatest drug problem?(Round your answer to the nearest whole number)6. How many of the 181 participants in the survey reported ever using alcohol in theirlifetime? (Round your answer to the nearest whole number) -In statistics, the percentage is the same or equivalent to the proportion (p).Percent means per 100. For example, if there are 1,000 residents in a town, and 60% areDemocrats, then, on average, 60 out of each 100 are Democrats. You determine thetotal number of Democrats by converting the percentage to a proportion, .60, andmultiplying .60 x 1,000, which equals 600.-To determine a percentage, we divide the part by the whole and multiply by 100. So, if8 out of 234 seniors are reported to have tried Meth, we calculate the percentage:8/234 0.0342 and multiply 0.0342 x 100= 3.42%.-Remember: when you multiply by 10, move the decimal point one place to the right3;when you multiply by 100, move the decimal point two places to the right, etc.Answer the questions that follow the Table belowAdolescents at three drug treatment centers were surveyed. The questionnaire usedconsisted of 102 questions and was divided into four sections. The third section askedabout past drug use. The teens were asked about the greatest drug problem among 12substances- marijuana, hallucinogens, alcohol, benzodiazepines, depressants, non-cocaine stimulants, cocaine, heroin, prescription opiates, inhalants, other "club drugs",and nicotine.

The percentage of favorable outcomes can be calculated by multiplying the ratio of the number of…

Answered: Table Drug Use Characteristics 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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Arsenic Amounts Arkansas 4.80 4.90 5.02 5.37 5.43 5.37 5.60 5.61 5.57 5.91 5.97 6.12 California 1.50 3.71 3.95| 4.45| 4.94| 5.12 5.33 5.35 5.41 5.49 5.56 5.61 Texas 5.57 5.82 6.62 6.90 6.85 6.88 | 7.05 7.34 7.48| 7.58 7.71 | 7.73 I
Frequency 344.7 389.1 394.3 411.8 412.1 431.9 433.5 445 447.4 452.3 465.4 466 469.2 469.2 469.2 469.8 470.6 471.7 471.8 474.9 483 483.1 485 490.4 494.8 495.8 496.8 496.8 500 506.8 512.5 516.6 520.1 520.4 524.8 534.8 545.3 547.4 558.1 556.4 558.1 558.1 580.6 564.4 572.4 577.4 585 586.2 587.8 588.2 593.8 606.1 607.8 611.4 = 18 16 14 12 10 8 6 4 2 300 350 400 450 500 Find the first quartile for this data set. Q₁ length (cm) = 550 600 650 Find the third quartile for this data set. Q3² = Find the interquartile range for this data set. IQR = = Find the lower fence separating outliers from usual values. Fence Low Find the upper fence separating outliers from usual values. Fence high
130 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 0 16 0.1231 16 1 21 0.1615 37 2 17 0.1308 54 3 15 4 15 0.1154 84 5 14 0.1077 98 6 16 0.1231 114 7 0.1231 130 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 5 times per week? %
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.)
Household Paper Plastic 1 15.09 9.11 2 16.39 9.7 3 6.33 3.86 4 9.45 3.02 5 6.98 2.65 6 8.72 9.2 7 11.42 12.81 8 6.67 6.09 9 6.16 5.88 10 16.08 14.36 11 13.61 8.95 12 11.08 12.47 13 9.41 3.36 14 6.44 8.4 15 12.43 8.57 16 7.98 6.09 17 3.27 0.63 18 13.31 19.7 19 7.72 3.86 20 12.73 14.83 21 6.96 7.6 22 17.65 11.26 23 14.33 6.43 24 2.8 5.92 25 9.83 6.26 26 9.55 9.2 27 11.36 10.25 28 7.57 5.92 29 12.32 11.17 30 20.12 18.35
Does the type of instruction in a college statistics class (either lecture or self-paced) influence students’ performance, as measured by the number of quizzes successfully completed during the semester? Twelve students were recruited for the study. Students received the lecture instruction or a self-paced instruction. The total number of quizzes completed during teach type of instruction appear below.
A researcher hypothesizes that ambient air carbon monoxide pollution levels at a certain location should be higher in the winter than they are in the summer. The reasoning behind this hypothesis is that a major source of carbon monoxide in the air is from the incomplete combustion of fuels, and fuels tend to burn less efficiently at low temperatures. Moreover, it is felt that the stagnant winter air is more likely to trap the pollution. In order to investigate this hypothesis, the data set in DS 9.7.12 is collected which shows the ambient air carbon monoxide pollution levels (parts per million) for ten Sunday mornings in the middle of winter and ten Sunday mornings in the middle of summer.
110 adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below: # of times floss per week Frequency Relative Frequency Cumulative Frequency 0 23 0.2091 1 0.0818 32 2 4 0.0364 36 3 16 52 4 15 0.1364 67 5 13 0.1182 80 6 13 0.1182 93 7 17 0.1545 110 a. Complete the table (Use 4 decimal places when applicable) b. What is the cumulative relative frequency for flossing 5 times per week? %
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?
The most obese countries in the world have obesity rates that range from 11.4% to 74.6%. This data is summarized in the following table. Percent of Population Obese Number of Countries 11.4–20.45 32 20.45–29.45 11 29.45–38.45 5 38.45–47.45 0 47.45–56.45 3 56.45–65.45 2 65.45–74.45 1 74.45–83.45 1 (a) What is the best estimate of the average obesity percentage for these countries? (Round your answer to two decimal places.)(b) The United States has an average obesity rate of 33.9%. Is this rate above average or below? (Round your answers to two decimal places.) Since the average for the United Sates is 33.9%, compared to the average obesity rate of %, the United States has an obesity rate % higher than average. (c) How does the United States compare to other countries? (Assume that the United States is included in the data. Assume the other countries in the range 29.45–38.45 have higher obesity than the United States.) 1. The United States has an obesity rate…

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