-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. TableDrug Use Characteristics of Adolescent Treatment Centers (N=181)SubstanceGreatest problem drug Lifetime UseMarijuana65.799.4Nicotine11.081.8Alcohol6.194.5Cocaine/crack5.534.8Club drugs3.932.0Heroin/illicit methadone3.313.8Hallucinogens3.331.5Benzos/depressants1.231.5Inhalants9.4Prescription opiates25.47. How many of the 181 participants reported ever using inhalants in their lifetime?(Round your answer to the nearest whole number)8. What is the sum of the percentages for the greatest drug problem?

The total number of adolescents surveyed is 181. Each entry of the second column represents the…

Answered: Drug Use Characteristics of Adolescent…

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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True or false, more than twice as many E1-rated games were sold as T-rated games?
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Please calculate the mean Statement 1 % 2 % 3 % 4 % 5 % N M Travelling involves too much risk 12.1 44.4 24.1 13.6 5.8 257 I am motivated to travel and tour within Malaysia 0 3.9 7.8 32.3 56 257 I am motivated to travel and tour abroad 0 2.3 10.5 29.6 57.6 257 I am more inclined to visit less crowded outdoor attractions 0.4 36.2 9.3 35 19.1 257 I will travel after getting feedback from friends who are currently on a tour 0 25.3 23.3 35 16.3 257
Are the average number of times a month an adult eats out the same for all age groups? Use the data below to determine if they are all the same. 44-56 7 18-30 31-43 6 4 8 1 3 2 5 5 4 2 4 6 6 Assume all requirements are met. Run the test at a .10 level. 57-69 8 3517
1.11 A quick survey gives the price—an estimated average for a 170-gram can—for 14 different brands of water-packed light tuna, based on prices paid nationally in supermarkets. 1.01 1.92 1.22 0.84 0.65 0.52 1.41 1.14 0.65 0.66 0.71 0.60 0.61 0.67 Find the average price and average median price for the 14 different brands of tuna. (Round your answers to two decimal places and show answers.) Based on your findings, do you think that the distribution of prices is skewed? Explain. a) Since the median is higher than the mean, the distribution is slightly skewed to the left. b) More information is needed to determine skewness. c) Since the mean is higher than the median, the distribution is slightly skewed to the right. d) Since the mean and median are equal, the distribution is not skewed.
Monthly telephone charges for cell phone in the United States are normally distributed with a mean of $62 for a single user. Coach Keefer thinks that leasing smart phones has increased the monthly cell phone bill for a single user. O Ho : µ = 62 H : μ> 62 u > O Ho: µ= 62 Ha : µ# 62 OHo: = 62 Ha: 62 O Ho: p = 62 Ha:µ262 ASUS VivoBook
Give an descriptive interpretation
PRACTICE ANOTHER The following data represent crime rates per 1000 population for a random sample of 46 Denver neighborhoods.† 63.2 36.3 26.2 53.2 65.3 32.0 65.0 66.3 68.9 35.2 25.1 32.5 54.0 42.4 77.5 123.2 66.3 92.7 56.9 77.1 27.5 69.2 73.8 71.5 58.5 67.2 78.6 33.2 74.9 45.1 132.1 104.7 63.2 59.6 75.7 39.2 69.9 87.5 56.0 154.2 85.5 77.5 84.7 24.2 37.5 41.1 (a) Use a calculator with mean and sample standard deviation keys to find the sample mean x and sample standard deviation s. (Round your answers to one decimal place.) x = crimes per 1000 people s = crimes per 1000 people (b) Let us say the preceding data are representative of the population crime rates in Denver neighborhoods. Compute an 80% confidence interval for μ, the population mean crime rate for all Denver neighborhoods. (Round your answers to one decimal place.) lower limit crimes per 1000 people upper limit crimes per 1000 people Compute a 95% confidence interval for…
A business aba
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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.
Compare the variation of the 50 BMI’s and the 50 Pulse Rates. BMI's 15.9 19.3 19.4 20 20.1 21 21 21.6 21.6 23.2 24.5 24.6 24.8 25.5 25.8 25.8 25.9 26.1 26.1 26.7 27.1 27.3 27.4 27.4 28 28.3 28.4 28.5 29.1 29.3 29.8 29.9 30.4 30.8 30.8 31.1 31.2 31.4 31.8 32.7 33.3 33.3 33.5 33.6 34.5 36.5 36.7 37.4 38.9 45.4 BMI's x̄ = 28.254 and s = 5.72 Pulse rates 36 60 66 76 84 42 60 66 78 84 50 62 66 78 86 52 62 70 78 86 52 64 72 78 86 52 64 72 80 88 56 64 72 82 88 56 64 74 82 90 58 66 74 82 94 60 66 76 84 96 Pulse rate x̄ = 70.68 and s = 13.58

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