B. Determine whether the numerical value is a parameter or statistic.1. If I survey all the girls in a particular school and find that 10 percent of the girls haveblue eyes. for the population of girls in that school, 10 percent blue eyes is the2. If a survey of 400 15-year-old boys in a city finds that their average height is 5 feet 4inches, that figure is a3. A researcher weighs everyone in a sample of 30 laboratory rats and calculates theaverage weight for the group. The average weight is the

The measured value (i.e., the various numerical values in this case), that defines the…

Answered: B. Determine whether the numerical…

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 22PFA

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Which of the following statements is incorrect ? O A. Nominal data may be described as quantitative. O B. A categorical variable may produce ordinal data. OC. A discrete numerical variable may produce ratio scale data. OD Ordinal data may be described as qualitative .
Identify if the quantity reported is a Parameter or a Statistic 6. The average amount of time spent in a day by Mr. John’s students in their online classes is 4 hrs. and 25 minutes. 7. The average annual family income of all 210 families of a small rural town is Php127,530. 8. The average amount spent on clothing during the Enhanced Community Quarantine (ECQ) period of a sample of employees of government agencies in Baguio City is Php1,250.75. 9. The average number of online purchases made in a month by randomly selected SLU teaching employees is 8.5. 10. The average number of trades per week in the stock market made by the employees of Mr. Abraqs during the COVID-19 pandemic period is 5.2.
Which of the following statements is incorrect ? A. A categorical variable may produce ordinal data . B. Nominal data may be described as quantitative. C. A discrete numerical variable may produce ratio scale data. D) Ordinal data may be described as qualitative .
2. How much does a 1 unit increase in Length increase price? Use negative values if it results in a decreased price. Round your answers to two decimals. make price mpg rep78 headroom trunk weight length turn displacement gear_ratio foreign AMC Concord 4,099 22 3 3 11 2,930 186 40 121 3.58 Domestic AMC Pacer 4,749 17 3 3 11 3,350 173 40 258 2.53 Domestic AMC Spirit 3,799 22 3 12 2,640 168 35 121 3.08 Domestic Buick Century 4,816 20 3 5 16 3,250 196 40 196 2.93 Domestic Buick Electra 7,827 15 4 4 20 4,080 222 43 350 2.41 Domestic Buick LeSabre 5,788 18 3 4 21 3,670 218 43 231 2.73 Domestic Buick Opel 4,453 26 3 10 2,230 170 34 304 2.87 Domestic Buick Regal 5,189 20 3 2 16 3,280 200 42 196 2.93 Domestic Buick Riviera 10,372 16 3 4 17 3,880 207 43 231 2.93 Domestic Buick Skylark 4,082 19 3 4 13 3,400 200 42 231 3.08 Domestic Cad. Deville 11,385 14 3 4 20 4,330 221 44 425 2.28 Domestic Cad. Eldorado 14,500 14 2 4 16 3,900 204 43 350 2.19 Domestic Cad.…
Determine whether the given value is a statistic or a parameter.A health and fitness club surveys 40 randomly selected members and found that the average weight of those questioned is 157 lbs
A programmer plans to develop a new software system. In planning for the operating system that he will use, he needs to estimate the percentage of computers that use a new operating system. How many computers must be surveyed in order to be 90% confident that his estimate is in error by no more than two percentage points? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of computers with new operating systems. n=
Is the given statement true or false? Justify your answer. If a police officer wants to find whether the average speed of motorists a highway with speed limit of 55 mph, the null hypothesis is 55.
4 The margin of error for a 95% interval estimate for the population mean rental charge is, a 57.54 b 53.27 c 49.33 d 45.67
For a population with ? = 100 and ? = 20, what is the X value corresponding to z = 1.50? 30115 101.5130
As part of the National Health and Nutrition Examination Survey, the Department of Health and Human Services obtained self-reported heights and measured the heights for males aged 12-16. All measurements are in inches. Is there a difference between the reported height vs. the measured height? Reported Height 68 71 63 71 71 60 65 64 54 63 66 72 Measured Height 67.9 69.9 64.9 68.3 70.3 60.6 64.5 67.0 55.6 74.2 65.0 70.8 Difference
Do liberal arts colleges pay economists more than they pay other professors? To find out we looked at a sample of 2929 small college faculty members and built a model of their salaries that included a number of variables four of which were estimated as given below: (standard errors in parentheses)Si = 36,721 + 817Mi + 426Ai + 406Ri + 3539Ti(259) (456) (24) (458)R2 = .77 n = 2929Where: Si = the salary of ith college professor (in dollars)Mi = a dummy variable equal to 1 if the ith professor is a male and 0 otherwiseAi = a dummy variable equal to 1 if the ith professor is African American and 0 otherwiseRi = the years in rank of the ith professorTi = a dummy variable equal to 1 if the ith professor teaches economics and 0 otherwisea. Carefully explain the meaning of the estimated coefficient of M.b. The equation indicates that African American earn $426 more than members of other ethnic groups, holding constant the other variables in the equation. Does this coefficient have the sign you…
4.) The brand manager for a brand of toothpaste must plan a campaign designed to increase brand recognition. He wants to first determine the percentage of adults who have heard of the brand. How many adults must he survey in order to be 80% confident that his estimate is within six percentage points of the true population percentage? Complete parts (a) through (c) below. a) Assume that nothing is known about the percentage of adults who have heard of the brand. n= b) Assume that a recent survey suggests that about 80%of adults have heard of the brand. n=

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